Exercise 5.3 Clinicians at a nursing home facility want to see if giving residents plants to tend to will help lower depression. To test this idea, the residents are randomly assigned to two groups: Each member of the treatment group will be issued a small bamboo plant along with a card detailing care instructions; members of the control group will receive no plant. After 90 days, all participants will complete the Acme Depression Scale, a 10-question instrument that renders a score between 1 and 100 (1 = low depression, 100 = high depression).

Data set: Ch 05 - Exercise 03A.sav Codebook Variable: group Definition: Plant group assignment Type: Categorical (1 = No plant, 2 = Bamboo)

Variable: mood Definition: Depression level Type: Continuous (1 = low depression, 100 = high depression)

1. Write the hypotheses.