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13.4 Exercise 24

Avg difficulty 2.5

Are the variances for incomes on the East Coast and the West Coast the same? Suppose that the table shows the results of a study. Income is shown in thousands of dollars. Assume that both distributions are normal. Use a level of significance of 0.05.

East West
38 71
47 126
30 42
82 51
75 44
52 90
115 88
67

OpenStax Statistics, 13.4 Test of Two Variances, exercise 24

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Adapted from Statistics © 2022 Rice University. Licensed under CC BY 4.0. Source: Statistics. Imported at revision 7dea80a.