Working Activity The following information should be used to complete the extra

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Working Activity The following information should be used to complete the extra credit exercise. Obtain the average (mean) of the 20 months for each of the 5 categories. Using the mean of each category, place the 20 observations of each category in either a HIGH (above the mean) or a LOW (below the mean) group. For instance, if the mean of Packing Cost is 155,000, then Month 11 (450,000) would be placed in the HIGH group. Run a t-test (via Excel) to determine if there is a difference between the HIGH and LOW groups for each category. This means you should have 4 t-tests (one for each category). The base that you should use should be a p value ofs0.10. 1) 2) 3)

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Working Activity The following information should be used to complete the extra

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