A statistics instructor measured student attitudes toward a statistics course prior to lectures, at the midterm, and after the final exam. Attitudes were measured on a 16-point scale, with higher scores indicating more positive attitudes toward the statistics course.

Student Prior to Lectures At Midterm After the final

A 6 5 10

B 4 10 16

C 8 12 13

D 12 13 15

E 5 6 9

Based on the results shown in the table, test whether or not attitudes differed using the Friedman test at a 0.05 level of significance. (Round your answer to two decimal places.)

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