Question: Consider the NFL data in Exercise 12-21. (a) Find 95% confidence intervals on the regression coefficients. (b) What is the estimated standard error of

Consider the NFL data in Exercise 12-21.

(a) Find 95% confidence intervals on the regression coefficients.

(b) What is the estimated standard error of μ̂_Y|x0 when the percentage of completions is 60%, the percentage of TDs is 4%, and the percentage of interceptions is 3%.

(c) Find a 95% confidence interval on the mean rating when the percentage of completions is 60%, the percentage of TDs is 4%, and the percentage of interceptions is 3%.

Exercise 12-21

Table E12-11 presents quarterback ratings for the 2008 National Football League season (The Sports Network).

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