Coefficient Standard Error

Constant 12.924 4.425

X1 -3.682 2.630

X2 45.216 12.560

9. Refer to Exhibit 13-6. The interpretation of the coefficient of X1 is that

a. a one unit change in X1 will lead to a 3.682 unit decrease in Y

b. a one unit increase in X1 will lead to a 3.682 unit decrease in Y when all other variables are held constant

c. a one unit increase in X1 will lead to a 3.682 unit decrease in X2 when all other variables are held constant

d. It is impossible to interpret the coefficient.

10. Refer to Exhibit 13-6. The test statistic used to determine if there is a relationship between X2 and y

a. -1.4

b. 0.2

c. 3.60

d. 5