Drew Brees, continued Refer to Exercise 12.45. a. Estimate the average number o...

Drew Brees, continued Refer to Exercise 12.45.

a. Estimate the average number of passing yards for games in which Brees throws 20 completed passes using a 95% confidence interval.

b. Predict the actual number of passing yards for games in which Brees throws 20 completed passes using a 95% confidence interval.

c. Would it be advisable to use the least-squares line from Exercise 12.45 to predict Brees’ total number of passing yards for a game in which he threw only five completed passes? Explain.

Reference:

Drew Brees The number of passes completed and the total number of passing yards for Drew Brees, quarterback for the New Orleans Saints, were recorded for the 16 regular games in the 2010 football season.7 Week 10 was a bye and no data was reported.

a. What is the least-squares line relating the total passing yards to the number of pass completions for Drew Brees?

b. What proportion of the total variation is explained by the regression of total passing yards (y) on the number of pass completions (x)?

c. If they are available, examine the diagnostic plots to check the validity of the regression assumptions.