TABLE 11-3
As part of an evaluation program, a sporting goods retailer wanted to compare the downhill coasting speeds of 4 brands of bicycles. She took 3 of each brand and determined their maximum downhill speeds. The results are presented in miles per hour in the table below.
Trial Barth Tornado Reiser Shaw
1 43 37 41 43
2 46 38 45 45
3 43 39 42 46
-Referring to Table 11-3, the null hypothesis should be rejected at a 5% level of significance.

Question

Quizplus · Accepted Answer

To determine if the null hypothesis should be rejected or not, a statistical test such as an ANOVA or a t-test must be performed. Without conducting such a test, it is not possible to say for certain whether the null hypothesis should be rejected or not. Therefore, the statement "the null hypothesis should be rejected at a 5% level of significance" is not accurate without additional statistical analysis.

TABLE 11-3 As Part of an Evaluation Program, a Sporting Goods Retailer