Hint(s) Check My Work The estimated regression equation for a model involving two independent variables and 10 observations follows. y = 30.0949 + 0.4719x1 + 0.2847:2 a. Interpret bj and by in this estimated regression equation (to 4 decimals). b1 = - Select your answer - - Select your answer - b. Estimate y when *1 = 180 and #2 = 310 (to 3 decimals)