Applebee’s International, Inc., is a U.S. company that develops, franchises, and operates the Applebee’s Neighborhood Grill and Bar restaurant chain. It is the largest chain of casual dining restaurants in the country, with over 1,500 restaurants across the United States. The headquarters is located in Overland Park, Kansas. The company is interested in determining if mean weekly revenue differs among three restaurants in a particular city. The file entitled Applebees contains revenue data for a sample of weeks for each of the three locations.

a. Test to determine if blocking the week on which the testing was done was necessary. Use a significance level of 0.05.

b. Based on the data gathered by Applebee’s, can it be concluded that there is a difference in the average revenue among the three restaurants?

c. If you did conclude that there was a difference in the average revenue, use Fisher’s LSD approach to determine which restaurant has the lowest mean sales.