A researcher conducts an independent-measures study examining the effectiveness of a group exercise program at an assisted living facility for recovering 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: 2 tails, alpha level at .05, Confidence Interval 90% Control Exercise 10 n = 15 M= 12 M = 15.5 SS = 120.5 SS - 190.0 a. Computed T = b. Cohen's d and Magnitude size = C. Confidence Interval (report both low and interval) =