A researcher conducts an independent-measures study examining the effectiveness of a group exercise program at an assisted living facility for elderly adults. One group of residents is selected to participate in the program, and a second group serves as a control. After 6 weeks, the researcher records a combined score measuring balance and strength for each individual. The data are as follows:

(9 POINTS)

Control

Exercise

n = 10

n = 15

M = 12

M = 15.5

SS = 120.5

SS = 190.0

1)Does the exercise program have a significant effect?Use a two-tailed test with an alpha level of .05.Be sure to state your null hypothesis, and make an overall conclusion including an APA style statement.

2)If necessary, compute Cohen's d to measure the size of the treatment effect.