The file called Vehicles contains data for a sample of motor vehicles that are owned by an insurance company. Data are available for two variables: highway mileage and curb weight.

a. Develop a scatter plot for these data. Discuss what the plot implies about the relationship between the two variables. Assume that you wish to predict highway mileage by using vehicle curb weight.

b. Compute the correlation coefficient for the two variables and test to determine whether there is a linear relationship between the curb weight

(independent variable) and the highway mileage

(dependent variable) of automobiles.

c. Compute the linear regression equation based on the sample data. Provide an estimate of the average highway mileage you would expect to obtain from a vehicle that weighs 4,012 pounds.