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Hypothesis Testing:Difference in the means of the two groups

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You are given the following data. Test the claim that there is a difference in the means of the two groups. Use = 0.01.
Group A Group B
x1 = 5 x2 = 7
s1 = 12 s2 = 18
n1 = 63 n2 = 86
· State the null and alternate hypotheses
· Determine which test statistic applies, and calculate it
· Determine the critical value(s).
· State your decision: Should the null hypothesis be rejected (please show all work).

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Solution Summary

The solution provides step-by-step method for the calculation of testing of hypothesis using z test for comparison of mean. Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data.