# Independent sample t test

A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness for women and for men. At = .05, what is the value the test statistic?

Women Men

Sample size 50 80

Mean effect 7 6.95

Sample S.D.s 3 4

A. t = 3.252

B. z = 0.455

C. z = 0.081

D. z = 0.151

https://brainmass.com/statistics/students-t-test/independent-sample-t-test-225978

#### Solution Summary

The solution provides step by step method for the calculation of test statistic for two populations . Formula for the calculation and Interpretations of the results are also included.

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