team performance statistics

The data in Table 12-5 are the 1976 team performance statistics for the teams in the National Football League (Source: The Sporting News).
(a) Fit a multiple regression model relating the number of games won to the teams’ passing yardage (x2), the percent rushing plays (x7), and the opponents’ yards rushing (x8).
(b) Estimate s2.
(c) What are the standard errors of the regression coefficients?
(d) Use the model to predict the number of games won when x2 = 2000 yards, x7 = 60%, and x8 = 1800.

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