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July 24, 2025, 06:24:29 pm

Author Topic: onur369's Methods Question Thread :)  (Read 31040 times)  Share 

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onur369

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Re: onur369's Methods Question Thread :)
« Reply #240 on: October 11, 2011, 07:43:11 pm »
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It was the ratios that had me.... never saw nothing like that in maths quest or I mustve missed it :/
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onur369

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Re: onur369's Methods Question Thread :)
« Reply #241 on: October 16, 2011, 09:51:02 pm »
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If Pr(z,-c)=0.75 where Z is a standard normal random variable, then c is closest to ?
a: 0.6745
b: -0.6745
c: 0.5987
d: 0.7734
e: -0.7734
2011:
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English 35, Further 45+, Methods 35, Physics 32, Turkish 33, Legal 28.

tony3272

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Re: onur369's Methods Question Thread :)
« Reply #242 on: October 16, 2011, 09:56:56 pm »
+1
(i'm assuming that's supposed to be a less than sign, not a comma)
Just using inverse normal on your CAS:
-c = invnorm(0.75)
-c=0.6745
therefore c=-0.6745
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onur369

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Re: onur369's Methods Question Thread :)
« Reply #243 on: October 16, 2011, 10:00:41 pm »
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Yes, it was supposed to be less than, thanks!
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onur369

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Re: onur369's Methods Question Thread :)
« Reply #244 on: October 18, 2011, 04:31:43 pm »
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heffernan 2011 exam 2 anyone??? please
2011:
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English 35, Further 45+, Methods 35, Physics 32, Turkish 33, Legal 28.