Post by: hanhanchampion on November 10, 2008, 02:12:57 pm
I think it's very easy haha
Post by: hanhanchampion on November 10, 2008, 02:13:52 pm
Post by: chikopapi on November 10, 2008, 02:14:12 pm
Post by: AppleXY on November 10, 2008, 02:22:08 pm
Post by: 205ism on November 10, 2008, 02:22:21 pm
Post by: J_ on November 10, 2008, 02:23:22 pm
apart from that
was alright
tad harder than previous years?
Post by: jod333 on November 10, 2008, 02:24:25 pm
Post by: Lulu on November 10, 2008, 02:24:36 pm
I couldn't do two of the multiple choice questions and maybe lost 4-5 marks on section two, hope I can still get above 40 though! It was pretty long too, i finished with about 5 mins to check over my answers...
Post by: Mikey123 on November 10, 2008, 02:26:56 pm
I suck at methods. I found it very looooong and challenging.
Post by: Collin Li on November 10, 2008, 02:27:27 pm
One word.
I suck at methods. I found it very looooong and challenging.
haha what? how is that one word?
Post by: Mikey123 on November 10, 2008, 02:28:21 pm
Post by: midas_touch on November 10, 2008, 02:30:57 pm
Post by: bingbinglanglang on November 10, 2008, 02:31:46 pm
Post by: chikopapi on November 10, 2008, 02:33:05 pm
Post by: bingbinglanglang on November 10, 2008, 02:34:31 pm
Post by: Lulu on November 10, 2008, 02:35:08 pm
So what new adventure did Tasmania Jones find himself in today? :P
He got bitten by a snake and had to find the shortest way to his camp in order to retrieve the antidote.
HUGE Spoiler alert: he lives, amazing!!
Post by: negatron on November 10, 2008, 02:35:48 pm
Post by: xers on November 10, 2008, 02:36:49 pm
Post by: J_ on November 10, 2008, 02:36:58 pm
So what new adventure did Tasmania Jones find himself in today? :P
Got bitten by a snake, was so temptep to draw a person with a snake dangling of his...
Had to work out the quickest path to an anti-tote (w.e) etc.
Post by: Lulu on November 10, 2008, 02:38:05 pm
Does anybody still remember their answer to the last part of the TJ question? Is it 5 days or 6 days?
i didn't get it (guessed 10 =.=), my friends said 5 days though
Post by: random.photon on November 10, 2008, 02:38:24 pm
Post by: Quickclaw on November 10, 2008, 02:38:41 pm
Post by: gabrielle__ on November 10, 2008, 02:39:26 pm
1.C
2.C
3.D
4.A
5.E
6.B
7.C
8.D
9.A
10.C
11.D
12.C
13.C
14.D
15.B
16.C
17.B
18.E
19.B
20.B
21.D
22.C
Post by: gabrielle__ on November 10, 2008, 02:40:05 pm
Does anybody still remember their answer to the last part of the TJ question? Is it 5 days or 6 days?
I Got 5 days
Post by: xers on November 10, 2008, 02:41:08 pm
Post by: Quickclaw on November 10, 2008, 02:42:23 pm
Post by: gabrielle__ on November 10, 2008, 02:44:01 pm
i (L) tasmania jones :)
Post by: Jeffree on November 10, 2008, 02:45:04 pm
16, 24, 32, 40 , 48 ,56...?
Post by: gabrielle__ on November 10, 2008, 02:46:49 pm
16 - 0 days had past,
so therefore FIVE days.
Post by: username on November 10, 2008, 02:47:24 pm
Post by: J_ on November 10, 2008, 02:47:40 pm
btw, im glad tasmiania didn't die.
i (L) tasmania jones :)
next time.... he'll be in the netball q
Post by: gabrielle__ on November 10, 2008, 02:47:57 pm
Life sucks.
why? :(
Post by: danielf on November 10, 2008, 02:48:28 pm
Post by: random.photon on November 10, 2008, 02:48:52 pm
btw, im glad tasmiania didn't die.
i (L) tasmania jones :)
next time.... he'll be in the netball q
rofl
Post by: gabrielle__ on November 10, 2008, 02:48:54 pm
i picture him as a bandicoot with a really cool navy hat and red shorts ;)
Post by: gabrielle__ on November 10, 2008, 02:49:43 pm
or on what day?
Post by: ell on November 10, 2008, 02:50:47 pm
Post by: xers on November 10, 2008, 02:51:09 pm
what do you all picture tasmania jones to look like?He's the CEO of vcaa if u didnt know. Eventually you will be shown progressively each year of how he made it to his current position.
i picture him as a bandicoot with a really cool navy hat and red shorts ;)
Post by: username on November 10, 2008, 02:51:32 pm
Life sucks.
why? :(
I found the exam incredibly hard. I left patches of crap everywhere, the only thing I completed fully was the first short answer.
But I'm glad you did well (by the looks of it), gabrielle.
Post by: GLM on November 10, 2008, 02:51:48 pm
Probability was by far the best!
Post by: Jeffree on November 10, 2008, 02:52:08 pm
Post by: Quickclaw on November 10, 2008, 02:53:16 pm
didnt it say after how many days? so I thought 5
Post by: xers on November 10, 2008, 02:53:27 pm
did the question ask: how many days?How many days i think.
or on what day?
Post by: gabrielle__ on November 10, 2008, 02:53:51 pm
fair sure he's an australian indiana jones.. ...so like..tasmania..jones..so hes crocodile dundeee
haha no way, he is a bandicoot fo' sho!
Post by: gabrielle__ on November 10, 2008, 02:55:22 pm
Life sucks.
why? :(
I found the exam incredibly hard. I left patches of crap everywhere, the only thing I completed fully was the first short answer.
But I'm glad you did well (by the looks of it), gabrielle.
well i agree that life sucks atm.
but your last exam will be soon, and then life will be amazing! :)
don't dwell on the questions you didn't answer. just think about how good life is going to be after vce! :) fuckkkkk yes.
Post by: Lulu on November 10, 2008, 02:55:22 pm
Post by: orsel on November 10, 2008, 02:56:02 pm
did the question ask: how many days?How many.
or on what day?
Yes, I'm sure.
Post by: gabrielle__ on November 10, 2008, 02:56:51 pm
did the question ask: how many days?
or on what day?
so the answer is five then, right?
How many.
Yes, I'm sure.
Post by: J_ on November 10, 2008, 02:57:29 pm
hence why his so nooby
Post by: grimsy on November 10, 2008, 02:58:57 pm
Post by: iamdan08 on November 10, 2008, 03:01:40 pm
Post by: xers on November 10, 2008, 03:02:04 pm
Post by: Synesthetic on November 10, 2008, 03:02:11 pm
z(0)=16, increase by 8 every day
=> z(1)=24, z(2)=32, z(3)=40, z(4)=48, z(5)=54>50 => Requires five days
Post by: Butler on November 10, 2008, 03:02:57 pm
Post by: J_ on November 10, 2008, 03:04:42 pm
On one of the Tasmania questions, my boyfriend wrote "Tasmania didn't make it; he was mauled by a lion whilst running at 5km/h through the jungle."
lmao
Post by: Renown on November 10, 2008, 03:06:20 pm
On one of the Tasmania questions, my boyfriend wrote "Tasmania didn't make it; he was mauled by a lion whilst running at 5km/h through the jungle."
Hahahaha!
Post by: We Want Peace. on November 10, 2008, 03:07:35 pm
Does anybody still remember their answer to the last part of the TJ question? Is it 5 days or 6 days?
I Got 5 days
i had 7 days lol. using arithmetic sequence.
Post by: xox.happy1.xox on November 10, 2008, 03:09:18 pm
Post by: zzdfa on November 10, 2008, 03:09:54 pm
that was the question
he needs to take 6 capsules
16 24 32 40 48 56
one capsule every day
so he has to take a capsule on 6 days.
Post by: Synesthetic on November 10, 2008, 03:16:11 pm
Post by: grimsy on November 10, 2008, 03:17:18 pm
'on how many days does he have to take the capsule'
that was the question
he needs to take 6 capsules
16 24 32 40 48 56
one capsule every day
so he has to take a capsule on 6 days.
high five!
Post by: monicak on November 10, 2008, 03:19:33 pm
Post by: clau.diia on November 10, 2008, 03:21:56 pm
Post by: darlok on November 10, 2008, 03:27:47 pm
Post by: curry_in_a_hurry69 on November 10, 2008, 03:28:30 pm
Post by: gabrielle__ on November 10, 2008, 03:28:47 pm
how many hours have past from the beginning of 1am to the beginning of 6am.... FIVE HOURS
how many days have past from the beginning of day 1 to the beginning of day 6... FIVE days!
Post by: chris43 on November 10, 2008, 03:29:40 pm
This happens during the 5th day, therefore its 5, even though it slips back to 48 during that day
Post by: ilovesuck on November 10, 2008, 03:30:22 pm
It's six days, how do I know? Look at the high achiever supplement when it comes out in december in The Age, my name should be under the heading "50".
bit of a fuckhead arent you
Post by: gabrielle__ on November 10, 2008, 03:31:06 pm
It's six days, how do I know? Look at the high achiever supplement when it comes out in december in The Age, my name should be under the heading "50".
"should be"... WON'T BE!
Post by: clau.diia on November 10, 2008, 03:31:17 pm
Post by: methodsboy on November 10, 2008, 03:32:32 pm
Post by: curry_in_a_hurry69 on November 10, 2008, 03:32:59 pm
Post by: darlok on November 10, 2008, 03:33:50 pm
Post by: gabrielle__ on November 10, 2008, 03:34:02 pm
if you take a pill today...and then you have to take one everyday for the next five days...does today not count as a day?
today does, but the last day doesn't because it hadn't past yet.
Post by: clau.diia on November 10, 2008, 03:36:02 pm
monday - pill
tuesday - pill
wed - pill
thurs - pill
fri - pill
sat - pill
that's six pills on six days.
and darklok that was low. don't need to start insulting people. it's just a discussion. if you want to be rude LEAVE
Post by: Collin Li on November 10, 2008, 03:36:41 pm
gabrielle, I trust myself over someone who got a 28 in legal.
Hmm, correlation between Legal Studies and Maths Methods, let alone year 11 performance versus year 12 performance.
Post by: username on November 10, 2008, 03:37:34 pm
gabrielle, I trust myself over someone who got a 28 in legal.
Really unnecessary.
In the end, she has an extra 2.8 increment on her ENTER, so it's pretty much a win-win for her.
Post by: gabrielle__ on November 10, 2008, 03:38:50 pm
gabrielle, I trust myself over someone who got a 28 in legal.
that was legal, not maths.
I'm a logical thinker, do EXTREMELY well in maths,
not so good in other subjects.
it even had a graph to show you
day 0 concentration 16
day 1 - 24
day 2 - 32
day 3 - 40
day 4 - 48
day 5 - 56
how thick do you have to be.
look at the graph you twit!
Post by: clau.diia on November 10, 2008, 03:41:15 pm
Post by: dekoyl on November 10, 2008, 03:42:31 pm
I did horribly. Lost at least 5 marks at the end.
Didn't get time to double check at all.
Post by: zzdfa on November 10, 2008, 03:42:44 pm
"Assuming he takes the capsule at the same time each day, on how many days does he need to take the a capsule so that he will no longer be affected by the snake toxin?"
i took a pill on day 0
i took a pill on day 1
i took a pill on day 2
i took a pill on day 3
i took a pill on day 4
i took a pill on day 5
i took a pill on 6 days.
and, CAS kids have an advantage but its counted a different subject so it doesnt matter.
Post by: darlok on November 10, 2008, 03:43:10 pm
Your first point in a game takes you from zero to one. The second point from one to two etc. The sixth day is from five to six.
Post by: iamdan08 on November 10, 2008, 03:43:32 pm
i really dont get how the cas kids DONT have the advantage is this exam
i have a cas for spech and methods is just normal...
IE cas could easily double check exact answers + draw the graphs quicker
wth vcaa...
The CAS exam was quite a bit different to the Non-Cas one. Just looking at the first question of short answer, we had about 2 or 3 more parts to that question. So VCAA do take into consideration that Cas is able to do things a bit quicker.
Post by: vce01 on November 10, 2008, 03:43:37 pm
It's six days, how do I know? Look at the high achiever supplement when it comes out in december in The Age, my name should be under the heading "50".
lololol
Post by: Robbo on November 10, 2008, 03:45:47 pm
Post by: Collin Li on November 10, 2008, 03:46:32 pm
Post by: Skullmaster4 on November 10, 2008, 03:47:20 pm
That isn't logical, he has to take a pill to start at conc 16..
I vote 6 days :)
Post by: Jeffree on November 10, 2008, 03:49:03 pm
Read the question.
"Assuming he takes the capsule at the same time each day, on how many days does he need to take the a capsule so that he will no longer be affected by the snake toxin?"
i took a pill on day 0
i took a pill on day 1
i took a pill on day 2
i took a pill on day 3
i took a pill on day 4
i took a pill on day 5
i took a pill on 6 days.
and, CAS kids have an advantage but its counted a different subject so it doesnt matter.
this
Post by: gabrielle__ on November 10, 2008, 03:49:57 pm
and we had to sketch the normal
did anyone else put a point of discontinuity at the asymptote?
Post by: vce01 on November 10, 2008, 03:50:06 pm
Post by: Synesthetic on November 10, 2008, 03:53:03 pm
Post by: zzdfa on November 10, 2008, 03:54:10 pm
for the question with the normal to the graph of tan
and we had to sketch the normal
did anyone else put a point of discontinuity at the asymptote?
no, why would you?
Post by: gabrielle__ on November 10, 2008, 03:55:55 pm
Post by: Collin Li on November 10, 2008, 03:57:35 pm
because the domain was not defined at that point
The normal does not concern the gradients, or continuity, of the other points of the curve. It only concerns the point at which you were asked to find the normal to. For that reason, the normal should always be a linear equation with the domain of all real values.
Post by: MikeOxlong on November 10, 2008, 03:57:53 pm
btw... wat was up with the last question?? thought it was incredibley tricky... thoughts..
Post by: xers on November 10, 2008, 03:58:28 pm
for the question with the normal to the graph of tanDo you have to sketch the normal over the same domain as the original graph? I sketched a small section oh it just enough to show the intercepts.
and we had to sketch the normal
did anyone else put a point of discontinuity at the asymptote?
Post by: gabrielle__ on November 10, 2008, 03:58:50 pm
Post by: bugmenot on November 10, 2008, 03:59:29 pm
Post by: Collin Li on November 10, 2008, 04:00:50 pm
if i lost 3 marks all up on both exams.. will i get a 50? any1?
Probably not. You pretty much need full marks for Methods.
Post by: amos on November 10, 2008, 04:01:55 pm
Post by: bugmenot on November 10, 2008, 04:04:08 pm
Post by: Flaming_Arrow on November 10, 2008, 04:06:01 pm
okay, what grade do you guys reckon a 45 would get? thanks
obviously A+
Post by: merlin on November 10, 2008, 04:06:41 pm
Post by: Collin Li on November 10, 2008, 04:06:49 pm
okay, what grade do you guys reckon a 45 would get? thanks
obviously A+
45/80?
Post by: Collin Li on November 10, 2008, 04:07:40 pm
lame... it will be 45+ though yeh cob? my sac marks are A avg?
enwiabe dropped 3 marks on Exam 2 (full on Exam 1) and got 44. (97% on SACs).I got 44 in methods in 2006 with 40/40 in exam 1, 77/80 in exam 2 and 97% for my SACs... I thought it was a friggen' joke.
Hmm...
That said, 2006 was considered an easy year!
Post by: amin_ali on November 10, 2008, 04:08:38 pm
Post by: vce01 on November 10, 2008, 04:09:27 pm
okay, what grade do you guys reckon a 45 would get? thanks
obviously A+
haha i wish.
Post by: xers on November 10, 2008, 04:09:51 pm
Post by: danielf on November 10, 2008, 04:09:59 pm
Post by: bingbinglanglang on November 10, 2008, 04:11:32 pm
Post by: clau.diia on November 10, 2008, 04:12:32 pm
what 45/80 ? thats an A+ for this exam??????????
doubt it
Post by: darlok on November 10, 2008, 04:14:46 pm
Post by: Skullmaster4 on November 10, 2008, 04:14:58 pm
More like B+
Post by: vce01 on November 10, 2008, 04:18:19 pm
so given that you'd get a B+ for 45 last year, im expecting a C+ for 45 atleast this year.
Post by: We Want Peace. on November 10, 2008, 04:18:52 pm
What would 40/40 exam 1 77/80 exam 2 (if suggested solutions so far are correct). And top 10% in SAC's at MHS get me?
45-50!well done
Post by: Robbo on November 10, 2008, 04:20:49 pm
Post by: kurrymuncher on November 10, 2008, 04:22:59 pm
What would Exam 1 40/40 Exam 2 bout 70/80, Rank 1 in cohort (so A+ average in sacs) get you for a study score.(Raw)Probably in the low 40s
Post by: Robbo on November 10, 2008, 04:24:22 pm
Post by: Quickclaw on November 10, 2008, 04:25:55 pm
Post by: /0 on November 10, 2008, 04:27:15 pm
Post by: monicak on November 10, 2008, 04:33:41 pm
Post by: Tea.bag on November 10, 2008, 04:38:11 pm
Post by: kurrymuncher on November 10, 2008, 04:40:20 pm
what ss would i get if i got 39/40 for exam 1 and 75/80 for exam 2???
low to mid 40s
Post by: dekoyl on November 10, 2008, 04:44:20 pm
I'm thoroughly disappointed that there were no normal distribution questions in either exam.I'm disappointed there was only one question with related rates and no differentiation by recognition.
Post by: vipershadow on November 10, 2008, 04:44:46 pm
Post by: davo on November 10, 2008, 04:47:38 pm
way harder then 06 but only a little bit harder than last year
Post by: kurrymuncher on November 10, 2008, 04:53:06 pm
Post by: vipershadow on November 10, 2008, 04:55:09 pm
That muddled me up so bad
Post by: danieltennis on November 10, 2008, 04:58:40 pm
lol what'd you have to do for that question where you had to find the probability that the chick's first 4 shots were succesfull given that she got 6 out of 8 shots?I don't remember this. I only remember that "what was the probability that exactly six shots out of eight were successful?"
That muddled me up so bad
Post by: melly04 on November 10, 2008, 05:00:53 pm
i get like D average for SACS and i think i got 55-60% for exam 1 and hopefully 50% for exam 2. is it still possible to get 30? or 35?
i try but i'm just bad at maths. i'm asian so i shud have the maths gene but i dont! haha
Post by: /0 on November 10, 2008, 05:02:41 pm
lol what'd you have to do for that question where you had to find the probability that the chick's first 4 shots were succesfull given that she got 6 out of 8 shots?I don't remember this. I only remember that "what was the probability that exactly six shots out of eight were successful?"
That muddled me up so bad
oh man i hope so
Post by: kurrymuncher on November 10, 2008, 05:03:19 pm
i am so bad at maths =(
i get like D average for SACS and i think i got 55-60% for exam 1 and hopefully 50% for exam 2. is it still possible to get 30? or 35?
i try but i'm just bad at maths. i'm asian so i shud have the maths gene but i dont! haha
probably not 35, but 30 if you're lucky.
Post by: melly04 on November 10, 2008, 05:07:30 pm
but i dunnoo...
Post by: flubbles on November 10, 2008, 05:07:42 pm
lol what'd you have to do for that question where you had to find the probability that the chick's first 4 shots were succesfull given that she got 6 out of 8 shots?
That muddled me up so bad
Quote from: 1ciiiWhat is the probability, correct to three decimal places, that her first 4 attempts at scoring a goal are successful, given that exactly 6 of her first 8 attempts at scoring a goal in a match are successful?
Combinatorics solution:
- Given exactly 6 successes == given exactly 2 failures
- Our probability space has these 2 failures anywhere in the 8 attempts, so 8 choices for the first fail * 7 choices for the second fail = 56
- The event we want has these 2 failures anywhere in the last 4 attempts, so 4 choices for the first fail * 3 choices for the second fail = 12
Post by: hanhanchampion on November 10, 2008, 05:08:07 pm
If i get 38 for exam 1, is it possible for me to get a ss over 40 raw??
Post by: hanhanchampion on November 10, 2008, 05:09:49 pm
Post by: kurrymuncher on November 10, 2008, 05:10:09 pm
after checking the answers, i dropped 4 marks, oh shitshitshitshitshit!!!!!
If i get 38 for exam 1, is it possible for me to get a ss over 40 raw??
Yes it is.
Post by: Synesthetic on November 10, 2008, 05:11:33 pm
also, could anyone explain 1 a iii in a more algebrac way?? i got the answer same as ii though.....
Mean = integral over [2,6] of xf(x)dx, enter into calculator => 4.1333 hours
Post by: hanhanchampion on November 10, 2008, 05:17:19 pm
is that question 1 a iii? i think it's the last question of 1...... i got that though...also, could anyone explain 1 a iii in a more algebrac way?? i got the answer same as ii though.....
Mean = integral over [2,6] of xf(x)dx, enter into calculator => 4.1333 hours
Post by: hanhanchampion on November 10, 2008, 05:18:07 pm
thank god im really scared cause of the competition!!after checking the answers, i dropped 4 marks, oh shitshitshitshitshit!!!!!
If i get 38 for exam 1, is it possible for me to get a ss over 40 raw??
Yes it is.
Post by: Synesthetic on November 10, 2008, 05:19:29 pm
is that question 1 a iii? i think it's the last question of 1...... i got that though...also, could anyone explain 1 a iii in a more algebrac way?? i got the answer same as ii though.....
Mean = integral over [2,6] of xf(x)dx, enter into calculator => 4.1333 hours
Sorry:
Quote from: 1ciiiWhat is the probability, correct to three decimal places, that her first 4 attempts at scoring a goal are successful, given that exactly 6 of her first 8 attempts at scoring a goal in a match are successful?
Combinatorics solution:
- Given exactly 6 successes == given exactly 2 failures
- Our probability space has these 2 failures anywhere in the 8 attempts, so 8 choices for the first fail * 7 choices for the second fail = 56
- The event we want has these 2 failures anywhere in the last 4 attempts, so 4 choices for the first fail * 3 choices for the second fail = 12
Post by: vipershadow on November 10, 2008, 05:23:20 pm
Please tell me that could be a B+ : '(
Post by: hanhanchampion on November 10, 2008, 05:27:35 pm
Yes, I saw that, i just don't understand... it seems to be explaining a lot..is that question 1 a iii? i think it's the last question of 1...... i got that though...also, could anyone explain 1 a iii in a more algebrac way?? i got the answer same as ii though.....
Mean = integral over [2,6] of xf(x)dx, enter into calculator => 4.1333 hours
Sorry:Quote from: 1ciiiWhat is the probability, correct to three decimal places, that her first 4 attempts at scoring a goal are successful, given that exactly 6 of her first 8 attempts at scoring a goal in a match are successful?
Combinatorics solution:
- Given exactly 6 successes == given exactly 2 failures
- Our probability space has these 2 failures anywhere in the 8 attempts, so 8 choices for the first fail * 7 choices for the second fail = 56
- The event we want has these 2 failures anywhere in the last 4 attempts, so 4 choices for the first fail * 3 choices for the second fail = 12
Post by: ReVeL on November 10, 2008, 05:28:16 pm
so I've got at the very best, 56/80
Please tell me that could be a B+ : '(
Would have been an A last year. I would say this year was similar if not abit harder. So could very well be an A.
Post by: Rietie on November 10, 2008, 05:30:26 pm
Because at 1.20pm the fire alarm/sirens went off at my school. Very, very loudly. Then half the school went walking past the exam's classroom talking to go to the lawn. Then the examiner thought everyone should close their exam booklets, get up and go to the lawn (but not talk at all). However, another teacher came in and said we should sit. And so everyone started talking (but we weren't allowed to talk about the exam) and others left the room to go to the toilet. The sirens were still going for another 5 minutes, then the siren sound changed... and then it was be broken up with a soothing male voice stating 'evacuate as directed. Evacuate as directed'.
:D
Very, very exciting. Finally the sirens stopped at around 1.30pm, and we were allowed another 15mins writing time because of it (we went till 2.15pm).
Post by: /0 on November 10, 2008, 05:31:35 pm
Post by: monicak on November 10, 2008, 05:31:54 pm
Post by: Synesthetic on November 10, 2008, 05:32:07 pm
Yes, I saw that, i just don't understand... it seems to be explaining a lot..is that question 1 a iii? i think it's the last question of 1...... i got that though...also, could anyone explain 1 a iii in a more algebrac way?? i got the answer same as ii though.....
Mean = integral over [2,6] of xf(x)dx, enter into calculator => 4.1333 hours
Sorry:Quote from: 1ciiiWhat is the probability, correct to three decimal places, that her first 4 attempts at scoring a goal are successful, given that exactly 6 of her first 8 attempts at scoring a goal in a match are successful?
Combinatorics solution:
- Given exactly 6 successes == given exactly 2 failures
- Our probability space has these 2 failures anywhere in the 8 attempts, so 8 choices for the first fail * 7 choices for the second fail = 56
- The event we want has these 2 failures anywhere in the last 4 attempts, so 4 choices for the first fail * 3 choices for the second fail = 12
She shoots for goal 8 times;
Split the problem into two scenarios: the first four shots at goal[1], then the next four[2].
[1] Probability she scores each of the first four times
n=4, r=4, p=0.8 => Pr(X=4) = (4C4)(0.8)^4(0.2)^0 = 0.8^4 = 0.4096
[2] Probability she scores two of the next four times
n=4, r=2, p=0.8 => Pr(X=2) = (4C2)(0.8)^2(0.2)^2 = 0.1536
[1] x [2] = 0.063 to 3 d.p.
From part a)ii) of that question, Pr(X=6) = 0.2936
Conditional probability: 0.063 / 0.2936 = 0.214 to 3 d.p.
Post by: /0 on November 10, 2008, 05:34:32 pm
Post by: danieltennis on November 10, 2008, 05:35:31 pm
Hmmm.... in the CAS exam I think there was only a) ii), not a) iii). Instead we had to do some markov chain stuffCAS must be different then.
Post by: hanhanchampion on November 10, 2008, 05:41:44 pm
sign.. i wish i knew how to do it during the exam..Yes, I saw that, i just don't understand... it seems to be explaining a lot..is that question 1 a iii? i think it's the last question of 1...... i got that though...also, could anyone explain 1 a iii in a more algebrac way?? i got the answer same as ii though.....
Mean = integral over [2,6] of xf(x)dx, enter into calculator => 4.1333 hours
Sorry:Quote from: 1ciiiWhat is the probability, correct to three decimal places, that her first 4 attempts at scoring a goal are successful, given that exactly 6 of her first 8 attempts at scoring a goal in a match are successful?
Combinatorics solution:
- Given exactly 6 successes == given exactly 2 failures
- Our probability space has these 2 failures anywhere in the 8 attempts, so 8 choices for the first fail * 7 choices for the second fail = 56
- The event we want has these 2 failures anywhere in the last 4 attempts, so 4 choices for the first fail * 3 choices for the second fail = 12
She shoots for goal 8 times;
Split the problem into two scenarios: the first four shots at goal[1], then the next four[2].
[1] Probability she scores each of the first four times
n=4, r=4, p=0.8 => Pr(X=4) = (4C4)(0.8)^4(0.2)^0 = 0.8^4 = 0.4096
[2] Probability she scores two of the next four times
n=4, r=2, p=0.8 => Pr(X=2) = (4C2)(0.8)^2(0.2)^2 = 0.1536
[1] x [2] = 0.063 to 3 d.p.
From part a)ii) of that question, Pr(X=6) = 0.2936
Conditional probability: 0.063 / 0.2936 = 0.214 to 3 d.p.
well, thanks synesthetic
Post by: username on November 10, 2008, 05:43:16 pm
Post by: equinox on November 10, 2008, 05:46:34 pm
lol what'd you have to do for that question where you had to find the probability that the chick's first 4 shots were succesfull given that she got 6 out of 8 shots?I don't remember this. I only remember that "what was the probability that exactly six shots out of eight were successful?"
That muddled me up so bad
Yes thats what I remember aswell. Do u do CAS by any chance?
Post by: sandhya on November 10, 2008, 05:48:48 pm
Post by: BrooklynZoo on November 10, 2008, 05:54:28 pm
its over...school is for suckers
Post by: sandhya on November 10, 2008, 05:56:49 pm
Post by: We Want Peace. on November 10, 2008, 05:58:05 pm
hey what study score can i expect with approx 78/80 and 39-40/40?
definitely 48 +.
Probably a 50.
Post by: sandhya on November 10, 2008, 05:59:17 pm
Post by: We Want Peace. on November 10, 2008, 06:05:05 pm
oh shit, you for real???? *goes an dies with happiness*
your scores are pretty good.
nearly 100%
Plus i expect this yr's cutoff would be similar as last year.(07')
so yeah...u will be good enough to get a A+ and 48+ if ur sac ranking is high as well.
Post by: shuun on November 10, 2008, 06:05:33 pm
Post by: Mikey123 on November 10, 2008, 06:05:57 pm
Post by: sandhya on November 10, 2008, 06:11:51 pm
oh shit, you for real???? *goes an dies with happiness*
your scores are pretty good.
nearly 100%
Plus i expect this yr's cutoff would be similar as last year.(07')
so yeah...u will be good enough to get a A+ and 48+ if ur sac ranking is high as well.
hey - sacs i have 97/100, ranked third. i want to know, do you think id be penalised twice for messing up the domain when sketching graphs? it was one of those 'i am so dumb' moments, whoever heard of messing up a domain that is pretty unrestricted????
Post by: sam2703 on November 10, 2008, 06:14:36 pm
what ss u think i can get
Post by: sandhya on November 10, 2008, 06:15:51 pm
Post by: sam2703 on November 10, 2008, 06:18:04 pm
Post by: We Want Peace. on November 10, 2008, 06:29:33 pm
oh shit, you for real???? *goes an dies with happiness*
your scores are pretty good.
nearly 100%
Plus i expect this yr's cutoff would be similar as last year.(07')
so yeah...u will be good enough to get a A+ and 48+ if ur sac ranking is high as well.
hey - sacs i have 97/100, ranked third. i want to know, do you think id be penalised twice for messing up the domain when sketching graphs? it was one of those 'i am so dumb' moments, whoever heard of messing up a domain that is pretty unrestricted????
nah. The assesors wont be too picky.
They will c that was a mistake which u have made twice.
only one cost marks.
It is same as consequential mark.Isnt it?
Post by: anonymous12 on November 10, 2008, 06:30:37 pm
I know everone is sick of these but what SS am I looking at:
100% SACS
30/40 EXAM 1
63-64 EXAM 2
(i scaled my marks down a bit)
Anyone?
Post by: bucket on November 10, 2008, 06:31:21 pm
I swear to god, the CAS exam was way too easy, should get near 80/80 :).
Post by: How2BeatVCE on November 10, 2008, 07:58:13 pm
For some reason everyone is saying how hard 2007 was. 2007 was a breeze compared to this year's
Question 2 was very hard (Specially for people with poor algebraic skills)
The end of Question 4 got very technical. Think i stuffed it up
Hoping for 65/80+ whilst 38/40 exam 1.
Post by: lukewarmwater on November 10, 2008, 08:31:57 pm
Exam 1: 40/40
Exam 2: 74-75/80
SACs: average in school (MHS student)
Thanks
Post by: kurrymuncher on November 10, 2008, 08:33:39 pm
Would will my study score be?
Exam 1: 40/40
Exam 2: 74-75/80
SACs: average in school (MHS student)
Thanks
Low to mid 40s
Post by: 20914.2008 on November 10, 2008, 08:48:53 pm
Post by: lukewarmwater on November 10, 2008, 09:12:53 pm
t=(1/2)((e^2)-1)
=3.1945 hours
=3 hours, 11.67 minutes
Now, nearest minute could be 12 (to the nearest minute, strictly), although this would mean Tas dies. So really, he should have only 3 h and 11 minutes, which means you round down.
Am i correct?
btw, trinon's solutions has it at 3h 12m.
Post by: xox.happy1.xox on November 10, 2008, 09:14:26 pm
gabrielle, I trust myself over someone who got a 28 in legal.
This is why I don't put my scores in my signature. Why can't people just mind their own business? :(
Post by: /0 on November 10, 2008, 09:16:06 pm
In question 3a, it asks how long TO THE NEAREST MINUTE, Tas has to find an antidote.
t=(1/2)((e^2)-1)
=3.1945 hours
=3 hours, 11.67 minutes
Now, nearest minute could be 12 (to the nearest minute, strictly), although this would mean Tas dies. So really, he should have only 3 h and 11 minutes, which means you round down.
Am i correct?
btw, trinon's solutions has it at 3h 12m.
From experience with external exams I would say 3h 12m. But then, it depends on the examiner's opinion I guess.
As long as you provided a reason for your choice, however, you would probably get the mark.
Post by: lukewarmwater on November 10, 2008, 09:18:05 pm
From experience with external exams I would say 3h 12m. But then, it depends on the examiner's opinion I guess.
As long as you provided a reason for your choice, however, you would probably get the mark.
thanks DivideBy0, I did actually provide the reaosn why i rounded down, so it would be mega gay if I lost the mark.
Post by: Butler on November 10, 2008, 09:26:02 pm
From experience with external exams I would say 3h 12m. But then, it depends on the examiner's opinion I guess.
As long as you provided a reason for your choice, however, you would probably get the mark.
thanks DivideBy0, I did actually provide the reaosn why i rounded down, so it would be mega gay if I lost the mark.
Yeah I did that too, I had the calculations equaling 191.67 minutes, and then said "Therefore Tas has 191 minutes to find the antidote."
Post by: DarkPhlame on November 10, 2008, 09:32:12 pm
what kind of dropkick school do u goto? where u get 100% for sacs and only those marks in exams... your sac marks will be dragged down, probs lucky if u get 40
Post by: bingbinglanglang on November 10, 2008, 09:47:21 pm
Post by: DarkPhlame on November 10, 2008, 09:52:43 pm
Post by: xox.happy1.xox on November 10, 2008, 09:53:26 pm
Post by: dekoyl on November 10, 2008, 09:57:39 pm
but i thought if your SAC marks arn't so good but u do good on your exams..then your SAC marks can get scaled up?I think it's the other way around.
Post by: bucket on November 10, 2008, 09:59:31 pm
Post by: bingbinglanglang on November 10, 2008, 10:02:00 pm
Post by: xox.happy1.xox on November 10, 2008, 10:04:47 pm
Post by: bingbinglanglang on November 10, 2008, 10:05:16 pm
Post by: bingbinglanglang on November 10, 2008, 10:05:45 pm
Now I'm confused. :Slol me tooooo.please someone explaiinnnn!!
Post by: MikeOxlong on November 11, 2008, 10:07:10 am
soo like last year on bio i got a b+ on first exam... pretty much gave up for the year... was getting low b's and c's for sacs and then like a month before exams i decided to try and came out with an A+ on the exam.. my sac marks went up to an A..
hope that helps
Post by: bingbinglanglang on November 11, 2008, 10:12:17 am
Post by: Robbo on November 11, 2008, 12:05:28 pm
Post by: username on November 11, 2008, 12:41:03 pm
So the third ranked student gets the third top exam mark as their sac mark.
Post by: xers on November 11, 2008, 12:46:37 pm
Post by: riadnicolas on November 11, 2008, 12:47:32 pm
The top ranked student (in the school) gets the top EXAM mark (in their school) as their SAC mark.
So the third ranked student gets the third top exam mark as their sac mark.
so if you go to a really bad school(everyone fails ) and your a stand out whatever youve gotten throughout the year means little because your exam mark will be your sac mark? bit confusing lol
Post by: ed_saifa on November 11, 2008, 12:48:44 pm
Then what if the top student somehow screw up the exams while the 2nd or 3rd got perfect?The top student would still get the top exam score for the sac result. But his exam marks will stay the same.
The 2nd ranked would get the 2nd highest exam result as the sac result. But would retain the exam result.
Post by: xers on November 11, 2008, 12:53:54 pm
Post by: ed_saifa on November 11, 2008, 12:56:05 pm
Sorry but what do you mean by "exam score for the sac result" and "exam marks"? How are they different? Im confused.GA1= sac result
GA2 + GA3= exam result
GA1 will scale according to the exam results.
GA2 + GA3 will stay the same regardless of rank.
Post by: xers on November 11, 2008, 12:58:09 pm
Post by: We Want Peace. on November 11, 2008, 03:34:25 pm
Post by: cobby on November 11, 2008, 03:38:36 pm
can anyone tell me how they scale up our marks?
your sac marks get moderated against your exam performance...i think?
Post by: We Want Peace. on November 11, 2008, 03:42:39 pm
can anyone tell me how they scale up our marks?
your sac marks get moderated against your exam performance...i think?
What if my sac score is lower compared to my exam score?
Post by: kurrymuncher on November 11, 2008, 03:44:45 pm
can anyone tell me how they scale up our marks?
your sac marks get moderated against your exam performance...i think?
What if my sac score is lower compared to my exam score?
Then it will get scaled up.
Post by: We Want Peace. on November 11, 2008, 03:48:27 pm
i think i understand now.
Thanks tripzedomain & kurrymuncher !lol
(haha i like ur poor Qty bear ,kurrymuncher )
Post by: kurrymuncher on November 11, 2008, 03:56:00 pm
Okay
i think i understand now.
Thanks tripzedomain & kurrymuncher !lol
(haha i like ur poor Qty bear ,kurrymuncher )
lol, its actually a USB. :)
Post by: We Want Peace. on November 11, 2008, 03:59:09 pm
Wooohhu....oh..yeah!
still a poor usb bear.
---> seems a little bit moving away from this thread.. :-X
Post by: cobby on November 11, 2008, 04:00:20 pm
Okay
i think i understand now.
Thanks tripzedomain & kurrymuncher !lol
(haha i like ur poor Qty bear ,kurrymuncher )
lol, its actually a USB. :)
LMAOOO thats so kool :P
Post by: random.photon on November 11, 2008, 04:04:10 pm
Post by: kurrymuncher on November 11, 2008, 04:11:49 pm
I always thought that was a dish washer and you shoved in the bear into it because the background looks like it might be a kitchen.
hahahaha, its just a picture from google, anyway, about exam 2....................
Post by: anonymous12 on November 11, 2008, 07:18:17 pm
but i thought if your SAC marks arn't so good but u do good on your exams..then your SAC marks can get scaled up?
I'm actually not bad in methods, but I tend to f*** up on exam
anonymous12
what kind of dropkick school do u goto? where u get 100% for sacs and only those marks in exams... your sac marks will be dragged down, probs lucky if u get 40
anonymous12
what kind of dropkick school do u goto? where u get 100% for sacs and only those marks in exams... your sac marks will be dragged down, probs lucky if u get 40
I scaled my marks down just to be sure.
I actually got about 33/40 exam 1 and 65/80 exam 2.
Post by: Ilovemathsmeth on December 17, 2009, 03:25:23 pm