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](https://secure.tutorsglobe.com/CMSImages/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.