The distance Y necessary for stopping a vehicle is a function of the speed of travel of the vehicle X. Suppose the following set of data were observed for 12 vehicles traveling at different speeds a. Assume that the stopping distance is a finear function of speed. Estimate the regression coefficients for this relationship. (2.019,0.386) b. What is the variance of the residuals? (7.146) 1 c. Determine the 90% confidence interval of the above regression equation for at least 3 values of speed