Solved: A professor tests whether the loudness of noise during an, Basic Statistics

A professor tests whether the loudness of noise during an

Question: A professor tests whether the loudness of noise during an exam (low, medium, high) is independent of exam grades (pass, fail). The following table shows the observed frequencies for this test.

863_Noise level.png

(a) Conduct a chi-square test for independence at a .05 level of significance. Decide whether to retain or reject the null hypothesis.

(b) Compute effect size using Cramer's V.

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