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Test Statistic: Two sample Z test for Mean

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A pharmaceutical company is testing the effectiveness of a new drug 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 a= 0.05 what is the test value?

Women Men
Sample size 50 80
Mean effect 7 6.95
Sample variance 3 4

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The solution provides step by step method for the calculation test statistic for two sample z test for mean. Formula for the calculation is also included.

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Test value
A pharmaceutical company is testing the effectiveness of a new drug lowering cholesterol. As ...

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