Question

You have selected two random samples of size 50, one from Population 1 and one from Population 2. You intend to use the samples to test the following hypotheses regarding the difference in means for the two populations: H0: μ1 – μ2 = 0 Ha: μ1 – μ2 ≠ 0
a. Suppose the sample results are 1 = 122 and 2 = 115. Compute the sample test statistic, z stat. Assume the population standard deviations are σ1 = 14 and σ2 = 18.
b. Using a significance level of .10, show the critical zscores, zcl and zcu, for the test and state your decision rule. Report your conclusion.


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  • CreatedJuly 16, 2015
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