With reference to Exercise 42, use suitable statistical software to find the P-value corresponding to the observed value of the test statistic. Use this P-value to rework the exercise.

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.