A consumer organization has reported test data for 50 car models. We will investigate the association between the weight of the car (in thousands of pounds) and the fuel efficiency (in miles per gallon). Use the data provided on the disk to reply to the question, where the response variable is Fuel Efficiency (mpg).
a) Make the scatterplot and obtain the regression equation.
b) Determine the coefficient of determination.
c) Interpret the coefficient of determination.