In an effort to determine whether differences exist between three methods of teaching statistics, a professor of business taught his course differently in each of three large sections. In the first section, he taught by lecturing; in the second, he taught by the case method; and in the third, he used a computer software package extensively. At the end of the semester, each student was asked to evaluate the course on a 7-point scale, where 1 = Atrocious, 2 = Poor, 3 = Fair, 4 = Average, 5 = Good, 6 = Very good, and 7 = Excellent. From each section, the professor chose 25 evaluations at random. Is there evidence that differences in student satisfaction exist with respect to at least two of the three teaching methods?