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Hypothesis Testing of Variance

For independent samples of customers of Internet providers A and B, the ages
are as listed in file XR11073. Using the 0.05 level of significance in a nondirec-
tional test, examine whether the variation in ages could be the same for customers
of the two providers.

Provider A Provider B
28 47 NOTE:
32 45 Please use an Excel spreadsheet for response. Please do not just provide the
29 41 answers but show in complete detail how you arrive at the answers, step-by-
34 47 step, from the beginning to the end of the solution. If an interpretation is necessary,
30 60 please explain fully with clear understanding.
38 44 Thank you
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Solution Summary

The solution provides step by step method for the calculation of testing of hypothesis. 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.

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