A study was conducted to examine those variables thought to be related to the job satisfaction of nonprofessional hospital employees. A random sample of 15 employees gave the following results:

Score on Job Satisfaction Test (Y)

Coded Intelligence Score

(X1)

Index of Personal Adjustment

(X2)

54 15 8 37 13 1 30 15 1 48 15 7 37 10 4 37 14 2 31 8 3 49 12 7 43 1 9 12 3 1 30 15 1 37 14 2 61 14 10 31 9 1 31 4 5

(a) Find the multiple regression equation describing the relationship among these variables.

(b) Compute the coefficient of multiple determination and do an analysis of variance.

(c) Let X1 ¼ 10 and X2 ¼ 5 and find the predicted value of Y.