Exercise 11-4 presented data on the number of games won by NFL teams in 1976. Find a

Question:

Exercise 11-4 presented data on the number of games won by NFL teams in 1976. Find a 95% confidence interval on each of the following:
(a) Slope
(b) Intercept
(c) Mean number of games won when opponents rushing yardage is limited to x = 1800
(d) Find a 95% prediction interval on the number of games won when opponents rushing yards is 1800.