Posted by **Barbara** on Sunday, February 28, 2010 at 11:51pm.

7. A sample of 40 observations is selected from one population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observations is selected from a second population. The sample mean is 99 and the sample standard deviation is 6. Conduct the following test using 95% level of confidence. Z-test for Unpaired data

A. Is it a 1 or 2 tail test

B. Compute the statistical calculation

C. What is your decision regarding H1

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