Qu. 130 The following portion of regression results was obtained when estimating a simple linear regression model consisting of 25 observations df SS MS F Regression dfreg 725.56 725.56 751.68 Residual dfres 22.2 MSE 00:17:17 Total dftot SST Coefficients Standard Error t-stat p-value eBook Intercept 80.3 2.08 38.68 1.95E-22 Files X -0.28 0.01 -27.42 4.54E-19 a. What is the sample regression equation? y = 80.3 + -0.28 x b. Interpret the intercept coefficient of the estimated regression equation. The response variable is expected to be equal to 80.3 units when x v is equal to V O unit(s). c. Find the predicted value for y if x] equals 200