10.41 Predicting public university tuition: 2000 versus 2014. Refer to Exercise 10.39. The data file also includes the in-state undergraduate tuition for the year 2000.

  1. (a) Run the simple linear regression using year 2000 in place of year 2008. What is the least-squares line?

  2. (b) Obtain the residuals and check model assumptions.

  3. (c) If you had to choose between the model using 2008 tuition and the model using 2000 tuition, which would you choose? Give reasons for your answers.