Refer to Exercise 19.26. Suppose that the week 1 data were not available in the north and east…

Refer to Exercise 19.26. Suppose that the week 1 data were not available in the north and east for chain 1, due to logistics problems that slowed the introduction of the product by a week.

a. Write an appropriate model.

b. Suggest a method for analyzing the data using available software.

c. Write model(s) for the procedure described in part (b).

Exercise 19.26

Refer to Exercise 19.25. Use the Tukey-Kramer W procedure to compare the different geographic areas by chain means. Use a  .05.

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.

a. Write an appropriate model (including an effect for weeks) and the sources of variability in an analysis of variance table.

b. How would your model change if we analyze the total 2-week sales data?

c. Run an analysis of variance on the 2-week sales data using formulas from Chapter 15. Use a  .05.

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