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 results were obtained.

a. Construct an ANOVA table. Assume sales are normally distributed.
b. Specify the competing hypotheses to test whether there are some differences in the mean weekly sales across the three store display locations.
c. At the 5% significance level, what is the conclusion of the test?

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Front of store (units sold) 947 1106 1143 1162 967 956 1057 996 X1-1041.8 Center of store Side aisle (units sold) (units sold) 858 780 786 816 800 770 876 802 X2 811.0 1096 1047 910 823 919 924 1091 1027 X3979.6 S 7583.4 s2 1418.3 S2- 9840.0 X- 944.1