Re: DSE 2008 Q25 and 26

Posted by Sris on Jun 24, 2015; 1:37pm
URL: http://discussion-forum.276.s1.nabble.com/DSE-2008-Q25-and-26-tp7598395p7598396.html

25.
its an example of binomial population..in this we calculate the z-statistic using the following formula

 |z|=|p - p'|/sqrtof((p'(1-p'))/n)... here p=30/400=0.075 p'=0.1, n=400 From this Z=1.66...

courtesy: ram

for 26 i have used difference of means test...refer ssc gupta for that