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

question 189

Short Answer

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, what is the critical value of Levene's test for homogeneity of variances at a 5% level of significance?

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Definitions:

One or Two-tail Test

A statistical hypothesis test that can assess whether there is evidence for an effect in either direction (two-tailed) or in a specified direction (one-tailed).

Significance Level

A threshold used in statistical testing to determine whether to reject the null hypothesis, typically represented by alpha (α).

Movie Editors

Professionals responsible for selecting, assembling, and piecing together raw footage to create a coherent and effectively told story or film.

Sign Test

A non-parametric statistical test used to determine if two dependent samples come from populations with the same median.