A market research firm is studying the relationship between the monthly income for a household y and the age of the homeowner (x1), the value of the car (x2), and the monthly mortgage payment for the household (in dollars) (x3). We obtain the following partial ANOVA table: Table 1: ANOVA Table Source df SS MS F Regression ? ? 1810.3861 ? Error ? 17338.9512 ? Total 24 ? a) Find the missing values. b) If b0 = 424.1518, b1 = 2.1546, b2 = 0.1572, b3 = 1.6864, SE(b0) = 928.8852, SE(b1) = 0.3184, SE(b2) = 0.0274, SE(b3) = 0.0158 find the least square regression line. c) Does the value of the car x2 contribute significant information for the prediction of y, given that x1 and x3 are already in the model? Test using = 0.01