The Marketing Manager at Foodco, a large grocery store, wants to determine if store display location influences

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The Marketing Manager at Foodco, a large grocery store, wants to determine if store display location influences sales of a particular grocery item. He instructs employees to rotate the display location of that item every week and then tallies the weekly sales at each location over a 24-week period (8 weeks per location). The following sales (in $) were obtained. Assume that sales are normally distributed.

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a. Specify the competing hypotheses to test whether there are some differences in the mean weekly sales across the three store display locations.

b. At the 5% significance level, what is the conclusion to the test?

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