Problem 10.8 Refer to the fuel efficiency data for 18 2004-05 model year automobiles of Problem 1.76.

(a) Draw the scatter plot for the regression Model(Y = mpg |X = weight).

(b) Calculate the least squares estimates of βˆ0 and βˆ1 and draw the graph of the estimated regression line y = βˆ0 + βˆ1x. Use the same axes on which you graphed the scatter plot.

(c) Compute the sample correlation, coefficient of determination, and the error sum of squares.

(d) Compute the predicted values and residuals for x = 2.78, x = 3.64, x = 5.59.