Post by: vce01 on November 06, 2008, 02:38:50 pm
(unless theres another way)
Post by: onlyfknhuman on November 06, 2008, 02:43:21 pm
Post by: BiG DaN on November 06, 2008, 02:44:44 pm
z= (x -m)/ sd?
Post by: Lulu on November 06, 2008, 02:46:05 pm
Post by: vce01 on November 06, 2008, 02:47:52 pm
are you referring to the discrete probability SD? or that huge normal distribution formula
oh yeah sorry, should've specified. the latter. where you're given a table and stuff, and have to work out the mean before.
Post by: Lulu on November 06, 2008, 02:49:47 pm
and i'm pretty sure it is examinable on exam 1. must say, i hate multiplying and adding all those decimals too though
Post by: bturville on November 06, 2008, 02:50:33 pm
Post by: bec on November 06, 2008, 02:55:56 pm
has anyone been specifically told that they have to know it?
Post by: bucket on November 06, 2008, 02:56:16 pm
I haven't done any questions like that for a long time and I'm sort of forgetting :S
Post by: vce01 on November 06, 2008, 02:57:08 pm
Post by: BiG DaN on November 06, 2008, 03:02:03 pm
okay thanks, and one more thing, i don't want to create a new thread...we don't get a CND table right? so anything to do with standard normal distribution and inv normal distribution won't be tested on exam 1?
if ur asked to find
Pr(z>0.5)
they will give u Pr(z<0.5)=0.xxxx
and u work it out from there
Post by: dekoyl on November 06, 2008, 03:02:25 pm
okay thanks, and one more thing, i don't want to create a new thread...we don't get a CND table right? so anything to do with standard normal distribution and inv normal distribution won't be tested on exam 1?If by CND table you mean those huge tables with decimals everywhere then no.
And bucket: Yes that's right.
Post by: vce01 on November 06, 2008, 03:08:32 pm
Post by: Mao on November 06, 2008, 04:32:07 pm