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

question 128

True/False

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, 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.

Identify the appropriate critical value for hypothesis testing based on sample size and hypotheses.

Interpret the significance (p-value) of statistical tests and its implications on hypothesis testing.

Understand the relationship between the t-statistic value, hypothesis testing outcomes, and mean differences.

Interpret statistical analysis reporting and its implications on the null hypothesis.

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Schizophrenia

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