Author Topic: statistics  (Read 4652 times)

Offline xcon89

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Re: statistics
« Reply #15 on: May 28, 2009, 12:27:35 pm »
insane boy

you are right!!

and the guy above it, actually what you should have done is (0.25 x 0.25 x 0.75) and MULTIPLY by three! rather than cube it!

anyway you'll get one mark out of the two :)

Offline eye-candy

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Re: statistics
« Reply #16 on: May 28, 2009, 12:30:50 pm »
ya...insane yur ans is correct..:)

stupid mistake
sh*t

Offline eye-candy

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Re: statistics
« Reply #17 on: May 28, 2009, 12:35:59 pm »
i m a girl By the way!
lol

Offline insane.kid

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Re: statistics
« Reply #18 on: May 28, 2009, 12:50:28 pm »
 ;D do u guys wanna discuss other answers i m ready to contribute  :)

Offline sahrhp

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Re: statistics
« Reply #19 on: May 28, 2009, 04:56:08 pm »
Q PnC

i  i dont remember

ii 5!x6!
iii   (4!x3!)x2

Q zoo trip

p(elephant)=0.25
P(camel)=0.25
P(tractor) =0.50

den dere was this tree

P(frightened)= (0.25x0.6)+(0.25x0.7)+(0.50x0.8)

P(camel, given not frightened)=(0.25x0.3)/(1-P(frightened))

Offline KillaInstinc

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Re: statistics
« Reply #20 on: May 28, 2009, 05:57:31 pm »
For The last ques..

Mean = 18.2

S.D = 14.2   

Offline Rage2o9

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Re: statistics
« Reply #21 on: May 29, 2009, 01:34:37 am »
Q PnC

i  i dont remember

ii 5!x6!
iii   (4!x3!)x2

Q zoo trip

p(elephant)=0.25
P(camel)=0.25
P(tractor) =0.50

den dere was this tree

P(frightened)= (0.25x0.6)+(0.25x0.7)+(0.50x0.8)

P(camel, given not frightened)=(0.25x0.3)/(1-P(frightened))


Answer for the first questiojn was a number which had like lots of 3s in it..
333333000 (something like that, cant remember)

Offline ocean

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Re: statistics
« Reply #22 on: May 30, 2009, 05:56:46 am »
hey...i did some really stupid mistakes in the last questi0n...the last two parts actually...i couldnt find the mean and s.d. any idea how much marks it may cost me? i had found (summision-fx) and and (summision fx^2) correctly i know, but had divided it by some other number than (summision f) :S

Offline eye-candy

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Re: statistics
« Reply #23 on: May 30, 2009, 12:50:25 pm »
i guess u will lose 2-3 marks in da 2nd last part
u will get all the marks in da last part if your method ws correct using the sd u got in the previous part
:)