8. Practically interpret adjusted-R2 for your "best" model. (4 pts.) SX PAGE (1 pt.)

9. Practically interpret s for your "best" model. (4 pts.) SX PAGE (1 pt.)

10. Would you recommend using your "best" model in practice? Explain fully. (4 pts.)

12. Practically interpret the prediction interval above. Use the phrase 95% confident in your answer. (4 pts.)

13. Give a theoretical interpretation of the phrase 95% confident in the above interval. (4 pts.)

14. State whether or not each of the following three assumptions about the random error term is reasonably satisfied. Explain your reasoning!

a) Mean error of 0 (2 pts.) SX PAGE (1 pt.)

b) Variance of error is constant (2 pts.) SX PAGE (1 pt.)

c) Errors are normally distributed (2 pts.) SX PAGE (1 pt.)