Problem 15 in Chapter 16 described a study examining the effectiveness of a 7-minute screen test for alzheimer's disease. The study evaluated the relationship between scores from the 7-minute screen and scores for the same patients from a set of cognitive exams that are usually used to test for alzheimer's diseas. For a sample, n=9 patients, with SS=92. The cognitive test scores averaged M=17, with SS=236, for these data SP=127. find the regression equation for predicting the cognitive scores from the 7-minute screen score. what percentage of variance in the cognitive scores is accounted for by the regression equation? and does the regression equation account for a significant portion of the variance in the cognitive scores? Use alpha=.05 to evaluate the F-ration

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