Applebee’s International, Inc., is the largest chain of casual dining restaurants in the country, with more than 2,000 restaurants across the United States (source:

Applebees.com). Suppose the company is interested in determining if mean weekly revenues differ among three restaurants in a particular city. The file titled 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 revenues among the three restaurants?

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