Obsessive-Compulsive Disorder The contingency table shows the results of a random sample of patie
1 answer below »
Obsessive-Compulsive Disorder The contingency table shows the results of a random sample of patients with obsessive-compulsive disorder after being treated with a drug or with a placebo. At a = 0.10, perform a homogeneity of proportions test on the claim that the proportions of the results for drug and placebo treatments are the same.
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Obsessive-Compulsive Disorder The contingency table shows the results of a random sample of patie
1 answer below »
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Result
Drug
Placebo
Improvement
39
25
No change
54
70
25. Is the chi-square homogeneity of proportions test a left-tailed, right-tailed, or two-tailed test?
26. Explain how the chi-square independence test is different from the chi-square homogeneity of proportions test.
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