Criterion:Identify IV, DV, and hypotheses and evaluate the null hypothesis for an independent samplesttest.

Instructions:Complete the following:

a. Identify the IV and DV in the study.

b. State the null hypothesis and the directional (one-tailed) alternative hypothesis.

c. Can you reject the null hypothesis at= .05? Explain why or why not.

Data:Dr. Z divides her clients with depression into 2 groups. She asks Group 1 not to watch or read any news for two weeks while in therapy and asks Group 2 to continue with therapy as normal. The groups scored the following on measure of depression:

Depression Scores:

Group 1: 34, 25, 4, 64, 14, 49, 54

Group 2: 24, 78, 59, 68, 84, 79, 57