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.

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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Center of store Front of store Side alsle 947 858 1096 780 1106 1047 1143 786 910 823 1162 816 967 800 919 956 770 924 1057 876 1091 802 1027 996