TABLE 10-18
As part of an evaluation program, a sporting goods retailer wanted to compare the downhill coasting speeds of four brands of bicycles. She took three of each brand and determined their maximum downhill speeds. The results are presented in miles per hour in the table below

-Referring to Table 10-18, based on the Tukey-Kramer procedure with an overall level of significance of 0.05, the retailer would decide that the mean speed for the Tornado brand is significantly different from each of the mean speeds for other brands.

Question

TABLE 10-18
As part of an evaluation program, a sporting goods retailer wanted to compare the downhill coasting speeds of four brands of bicycles. She took three of each brand and determined their maximum downhill speeds. The results are presented in miles per hour in the table below
 
-Referring to Table 10-18, based on the Tukey-Kramer procedure with an overall level of significance of 0.05, the retailer would decide that the mean speed for the Tornado brand is significantly different from each of the mean speeds for other brands.

Quizplus · Accepted Answer

The Tukey-Kramer procedure is used for pairwise comparison of means. Based on the table, the pairwise comparisons of means for each brand have significant differences except for the comparison between Hurricane and Cyclone. Therefore, it is possible that the mean speed for the Tornado brand is significantly different from each of the mean speeds for other brands, and the statement is true.

TABLE 10-18 As Part of an Evaluation Program, a Sporting Goods Retailer