Answer Happy

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): Design 1: 127 168 143 165 122 139 Design 2: 154135 132 171 153 149 Use the four steps in the initial part of Section 1 to test I at the 0.01 level of significance whether the difference between the means of these two samples is significanti