Business Research Methods 12th Edition by Donald Cooper,Pamela Schindler

Exercise 13

A computer manufacturer is introducing a new product specifically targeted at the home market and wishes to compare the effectiveness of three sales strategies: computer stores, home electronics stores, and department stores. Numbers of sales by 15 salespeople are recorded below:
Electronics store: 5, 4, 3, 3, 3
Department store: 9, 7, 8, 6, 5
Computer store: 7, 4, 8, 4, 3
a) Test the hypothesis that there is no difference between the means of the retailers ( =.05).
b) Select a multiple comparison test, if necessary, to determine which groups differ in mean sales ( =.05).