A shoe retailer conducted a study to determine whether there is a difference in the number of pairs of shoes sold per day by stores according to the number of competitors within a 1-mile radius and the location of the store. The company researchers selected three types of stores for consideration in the study: stand-alone suburban stores, mall stores, and downtown stores. These stores vary in the numbers of competing stores within a 1-mile radius, which have been reduced to four categories: 0 competitors, 1 competitor, 2 competitors, and 3 or more competitors. Suppose the following data represent the number of pairs of shoes sold per day for each of these types of stores with the given number of competitors. Use α = .05 and a two-way ANOVA to analyze thedata.

Number of Competitors 2 3 or more 47 40 39 43 42 53 24 27 32 Stand-Alone 41 30 45 25 31 38 31 39 29 35 30 59 48 51 Store Location Mall 48 50 29 28 26 Downtown 18 29 17 25