A statistics instructor measured student attitudes toward a statistics course pr

Question

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 the Midterm After the Final A 6 5 10 B 4 10 15 C 8 7 13 D 12 11 16 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.) $ chi_{R}^2 $ = State whether to retain or reject the null hypothesis. Retain the null hypothesis. Reject the null hypothesis.

Explanation / Answer

The statistical software output for this problem is:

Contingency table results:
Rows: var1
Columns: None

Chi-Square test:

Hence,

Chi-square statistic = 3.26

Retain the null hypothesis.

Prior to lectures At the midterm After the Final Total A 6 5 10 21 B 4 10 15 29 C 8 7 13 28 D 12 11 16 39 E 5 6 9 20 Total 35 39 63 137

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