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February 28, 2015

Homework Help: statistics

Posted by Anonymous on Wednesday, October 6, 2010 at 9:37am.

Assuming that the population variances are equal for Male and Female GPAs, test the following sample data to see if Male and Female PhD candidate GPAs (Means) are equal. Conduct a two-tail hypothesis test at =.01 to determine whether the sample means are different. Do NOT do a confidence interval.


Male GPAs Female GPAs
Sample Size 12 13
Sample Mean 2.8 4.95
Sample Standard Dev .25 .8

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