With reference to Exercise 42, test at the 0.02 level of significance whether it is reasonable to assume that the two populations sampled have equal variances.
Exercise 42
To compare two kinds of front-end designs, six of each kind were installed on a certain make of compact car. Then each car was run into a concrete wall at 5 miles per hour, and the following are the costs of the repairs (in dollars):
Use the four steps in the initial part of Section 1 to test at the 0.01 level of significance whether the difference between the means of these two samples is significant.