The New Jersey Department of Public Health offers psychological support programs for substance

abuse patients with depression. It is suggested that the type of depression varies by the type of

substance abuse. If so, such a relationship might help the department better target treatments.

They random sample 75 medically declared substance abusers with depression.

(2 = 5.12, p=.077; V=0.26; Lambdarow= 0.11, p > .05)

Type of Depression

Substance Abuse Clinical Dysthymic Manic

Alcohol 20 10 8

Drugs 10 15 12

1. Select and justify the best test(s). The chi-square, Phi, Yates, or Lambda (or even a combination) might be best for a problem given the data and research question. Do not assume the independent is always on the row.
2. Provide the null and alternative hypotheses in formal and plain language for the appropriate test at the 0.05 significance level.
3. Do the math and reject/retain null at a=.05. State your critical value.
4. Explain the results in plain language.