Statistics for Business and Economics (13th Edition)
13th Edition
ISBN: 9780134506593
Author: James T. McClave, P. George Benson, Terry Sincich
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 9.106ACI
Testing the effectiveness of supermarket sales strategies. Factorial designs are commonly employed in marketing research to evaluate the effectiveness of sales strategies. At one supermarket, two of the factors were price level (regular, reduced price, cost to supermarket) and Display level (normal display space, normal display space plus end-of-aisle display, twice the normal display space). A 3 × 3 complete factorial design was employed, where each treatment was applied three times to a particular product at a particular supermarket. The dependent variable of interest was unit sales for the week. (To minimize treatment carryover effects, each treatment was preceded and followed by a week in which the product was priced at its regular price and was displayed in its normal manner.) The next table reports the data collected.
- a. How many treatments are considered in this study?
- b. Do the data indicate that the
mean sales differ among the treatments? Test using α = .10. - c. Is the test of interaction between the factors price and Display warranted as a result of the test in part b? If so. conduct the test using α = .10.
- d. Are the tests of the main effects for Price and Display warranted as a result of the previous tests? If so, conduct them using α = .10.
- e. Which pairs of treatment means should be compared as a result of the tests in parts b-d?
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Chapter 9 Solutions
Statistics for Business and Economics (13th Edition)
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