76 16 211 The estimated regression equation for these data is y = -21.04 + 2.04x1 +4.80x2 Here SST = 15,188.1, SSR = 13,910.1, sb = 0.2597, and 8b2 = 0.9925. a. Test for a significant relationship among x1, x2, and y. Use a = 0.05. F = = 0.91 (to 2 decimals) The p-value is greater than 0.10 At a = 0.05, the overall model is significant b. Is 1 significant? Use a = 0.05 (to 2 decimals). Use t table. t == The p-value is Select your answer At a = 0.05, 1 - Select your answer - significant. c. Is 2 significant? Use = 0.05 (to 2 decimals). Use t table. t = The p-value is At a 0.05, B2 Select your answer - Select your answer 1 significant.