Dr. Z is interested in discovering if there is a difference in depression scores between those who do not watch or read the news and those who continue with therapy as normal. She 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.

Independent Samples T-Test
	t	df	p
Score		-2.580		12		0.024
Note. Student's t-test.

Descriptives

Group Descriptives
	Group	N	Mean	SD	SE	Coefficient of variation
Score		No News		7		34.857		21.988		8.311		0.631
		Treatment only		7		64.143		20.457		7.732		0.319

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. ______________