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

Problem Set 3.7: Independent Samples t Test

Criterion: Identify IV, DV, and hypotheses and evaluate the null Hypothesis for an independent samples t test.

Data: Use the information from Problem Set 3.7.

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.