In exercises that call for two-sample procedures, you may use either of the two approximations for the degrees of freedom that we have discussed: the value given by your software or the smaller of and . Be sure to state clearly which approximation you have used.

Question 7.50

7.50 Advertising in sports, continued.

Refer to the previous exercise. This study not only allows a comparison of these two fan groups, but also an assessment of each fan group separately. Write a short paragraph summarizing the key results an advertiser should take away from this study.