4. A social psychologist examining whether length of court trials (X] predicts length of time for juries to come to a decision (Y), reports the following results for the first four trials studied. 6 M= 9 M = 7 a. Figure the linear prediction rule. X-Mx Y-MY (Y-My]2 [X-MX)(Y-MY] 16 -4 64 OPOP M = 9 SS =_ M = 7 SS = _ SS = _ b = [(X - Mx) (Y - My)] SSx a = My - (b)(Mx) Linear prediction rule b. Make a graph with the regression line. N Figure the standardized regression coefficient. B = (b) VS5x VSSy