A designer of commercial retail space is performing a study to determine whether there is a difference in the amount of time customers wait in line ups at the tills in three different departments: Grocery, Toys, and Electronics. This information will be used to help inform the decision of where to place express and selfcheckouts. The following table contains summaries of their samples. Data is measured in minutes. Grocery Electronics Toys Mean 4.94 5.76 8.38 Std Error 0.72 0.52 0.42 Median 5.55 5.85 8.14 Std Dev. 2.03 1.47 1.18 Sample Var. 4.14 2.17 1.40 Range 6.92 4.36 3.10 Count 8 8 8 Perform the appropriate test. Be sure to include all necessary steps and a complete ANOVA table. Comment on whether a Fisher's LSD is required and why or why not, but do not perform one.