Test of Two Variances · Exercise 22

Are the variances for incomes on the East Coast and the West Coast the same? Suppose that 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.

$$\begin{array}{cc}\text{East}& \text{West}\\ \text{38}& \text{71}\\ \text{47}& \text{126}\\ \text{30}& \text{42}\\ \text{82}& \text{51}\\ \text{75}& \text{44}\\ \text{52}& \text{90}\\ \text{115}& \text{88}\\ \text{67}& \end{array}$$

This is an open-ended exercise: its source gives no single answer.

OpenStax, Introductory Business Statistics 2e · §12.1 Test of Two Variances · Exercise 22