MS Module 18: Regression analysis: Fitted values and predictions – homework assignment
(The attached PDF file has better formatting.)
Solve any one of the following end of chapter problems, showing all work. The numerical answers are in the appendix to the textbook; for the homework assignment, show how the answer is derived.
● Problem 45 (b) and (c) on page 646 (1st ed) / page 660 (2nd ed).
○ Part (b): show how to derive the confidence interval.
○ Part (c): show how to derive the prediction interval.
● Problem 51 (b), (c), (d), and (e) on page 647 (1st ed) / page 661 (2nd ed).
○ The problem gives summary statistics and estimate of the regression parameters. Show how to derive the three confidence intervals in Parts (b), (c), and (d).
○ Part (e): explain how the distance of the x value from the mean x value gives the solution.