DEPRESSION STUDY INFO:

A sample of 40 individuals is receiving services for depression in an outpatient clinic. The patients are randomly assigned to a treatment and a control condition. The treatment group patients will receive an experimental antidepressant medication while the control group will receive a placebo inert pill. Symptoms of depression using the Beck Depression Inventory (BDI) are compared across the two groups of patients after 8 weeks of treatment. Higher scores represent more depression.

	Treatment Group	Control Group
Mean	29.400	33.750
Variance	8.884	14.724
Group Size	20	20

1.What is the independent variable in this research problem?

Group of answer choices

Beck Depression Inventory

depressive symptoms

treatment condition

experimental antidepressant

patients with depression

2. What is the dependent variable in this research problem?

Group of answer choices

Beck Depression Inventory

depressive symptoms

treatment condition

experimental antidepressant

patients with depression

3. Is there a significant difference in group means on the BDI scores across the two groups?

Group of answer choices

Yes, there is a significance difference in group means on the BDI scores across the two groups, p < .05.

No, there is no significant difference in group means on the BDI scores across the two groups, p > .05.

The answer cannot be determined from the available information.