Question: For a sample of n = 9 patients, the scores for 7-Minute Screen averaged M = 7 with SS = 92. The cognitive test scores averaged M = 17 with SS = 236. For these data, SP = 127.

a. Find the regression equation for predicting the cognitive scores from the 7-Minute Screen score.

b. What percentage of variance in the cognitive scores is accounted for by the regression equation?

c. Does the regression equation account for a significant portion of the variance in the cognitive scores? Use a = .05 to evaluate the F-ratio.