Refer to Exercise 19.25. Use the Tukey-Kramer W procedure to compare the different geographic areas by chain means. Use a 5 .05.
In Exercise 19.25
The marketing research group of a corporation examined the public response to the introduction of a new TV game module by comparing weekly sales volumes (in $ thousand) for three different store chains in each of four geographic locations.

Chain Geographic Area 2 3 N WI W2 s Wi W2 E Wi W2 W Wi W2 35 17 7 30 22 12 42 30 22 48 28 19 5 35 15 38 40 20 22 43 28 26 48 23