ATAR Notes: Forum
Archived Discussion => 2010 => End-of-year exams => Exam Discussion => Victoria => Mathematical Methods CAS => Topic started by: johsephhh_ on November 05, 2010, 10:52:11 am
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There was a log Qs and i got P=2(now theres reason that its 1/2 so dw if u got this guys I got 2 though) and the probability one i got P=1/2 Everyone agree? :2funny:
Tangent Qs a = 1/6, c = 1/2 and d = -5/2
Prob Qs with the mean and Variance : .5 and -2/3
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I got p=1/2 for the probability question, and also got p=1/2 for the log e (p) one
A bit suspicious lol
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Prob was aight :) what do u reckon 28/40 will fetch me?
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I got 4/5 for the second part of question 1
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There was a log Qs and i got P=2 and the probability one i got P=1/2 Everyone agree? :2funny:
I got exactly the same XD
Lets hope it is correct !!
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LOL S.D is root variance OH yerh i got 0.50 AND -2/3 for that Qs everyone else?
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There was a log Qs and i got P=2 and the probability one i got P=1/2 Everyone agree? :2funny:
I got exactly the same XD
Lets hope it is correct !!
CHYEAH BRO fo shizzle
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got p = 1/2 for the log question, and p = 1/2 for probability one.
also got a = 1/6, c = 1/2 and d = -5/2 for the tangent question but didnt have time to check :-\
finished everything in 40 minutes only to be savaged by the last question and realising similar figures too late :idiot2:
lucky methods is 5th subject :)
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LOL S.D is root variance OH yerh i got 0.50 AND -2/3 for that Qs everyone else?
Yeah same
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OMG THE TANGENT Qs SAME awesome guys a = 1/6, c = 1/2 and d = -5/2
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OMG THE TANGENT Qs SAME awesome guys a = 1/6, c = 1/2 and d = -5/2
yeh its right
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Yay i got the tangent question tooo!!!!
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ah methods not looking too bad atm buh next exam gonna be crazy huh?
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so the first log question was 2?
or 1/2?
cause i got 2 but theres people in other threads who got 1/2
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fuck didnt square root the variance :(
fml fml fml
omg .... shit i did the same.
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so the first log question was 2?
or 1/2?
cause i got 2 but theres people in other threads who got 1/2
Fairly certain it was 1/2. Remember -ln(2) = ln(1/2)
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hmm now im thinking 1/2 :/
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The question asked for the answer in the form loge(p) which I assumed to mean no negative out the front. Leaves p = 1/2
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FML I lost like 7 marks already :(
I thought that log question was 2?
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It's definitely 1/2.
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so the first log question was 2?
or 1/2?
cause i got 2 but theres people in other threads who got 1/2
if you got 2, you mustve omitted the negative in front of the log D:
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FML I lost like 7 marks already :(
I thought that log question was 2?
same here bomb same here we're shattered i bet VCAA new this would happen. fags
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its 1/2 100 %
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most likely mate
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damn :(
well i seriously only got to that question in the last 30 seconds so its an effort at least
it was out of 3 marks i think?
so i can get 2/3 marks ?
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damn :(
well i seriously only got to that question in the last 30 seconds so its an effort at least
it was out of 3 marks i think?
so i can get 2/3 marks ?
hopefully xD
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can you still get one mark for stating b as -2/9 (using variance and not std.)
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i dunno... it was only a 2 mark qustion wasnt it??
they might be really tough if you overlooked variance... thats why vcca do sneaky quetsions like that... -_-
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can you still get one mark for stating b as -2/9 (using variance and not std.)
maybe but i think they put it there on purpose
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Hm, so what grade should 28/40 get?
Or 30/40?
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can you still get one mark for stating b as -2/9 (using variance and not std.)
I did this. how many marks?
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can you still get one mark for stating b as -2/9 (using variance and not std.)
I did this. how many marks?
well its worth 2marks, i reakon we could still get 1mark
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If you just purely stated the answer, you would only get 1 mark.
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Bomb i reckon a high B+ this year?
Can anyone confirm?
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If you just purely stated the answer, you would only get 1 mark.
i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
=Pr (Z > 2/9)
= Pr ( Z < -2/9)
therefore b = -2/9
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If you just purely stated the answer, you would only get 1 mark.
i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
=Pr (Z > 2/9)
= Pr ( Z < -2/9)
therefore b = -2/9
Yeah that would be 2 marks.
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If you just purely stated the answer, you would only get 1 mark.
i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
=Pr (Z > 2/9)
= Pr ( Z < -2/9)
therefore b = -2/9
Yeah that would be 2 marks.
except i used variance, so i still get 1 method mark?
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surely.
unless they purposely wanted to trip everyone with that
and then proceed to punish anyone that did fall into the trap
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If you just purely stated the answer, you would only get 1 mark.
i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
=Pr (Z > 2/9)
= Pr ( Z < -2/9)
therefore b = -2/9
Yeah that would be 2 marks.
except i used variance, so i still get 1 method mark?
Oh wait a sec, the answer was -2/3 wasn't it? You would probably get one mark for the method (even though you used variance) but lose the answer mark.
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If you just purely stated the answer, you would only get 1 mark.
i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
=Pr (Z > 2/9)
= Pr ( Z < -2/9)
therefore b = -2/9
Yeah that would be 2 marks.
except i used variance, so i still get 1 method mark?
Oh wait a sec, the answer was -2/3 wasn't it? You would probably get one mark for the method (even though you used variance) but lose the answer mark.
yea i hope so
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same!!!!
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If you just purely stated the answer, you would only get 1 mark.
i showed working out as in pr( X > 7 ) = Pr (Z > 7-5 /9 )
=Pr (Z > 2/9)
= Pr ( Z < -2/9)
therefore b = -2/9
Yeah that would be 2 marks.
except i used variance, so i still get 1 method mark?
doubt that would get 2 marks, maybe 1 method mark as uve used the incorrect value from the beginning :/