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Interpreting Regression Analysis

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I've calculated the Regression Analysis Table and need help interpreting the following:

Analyze the effect of sack yardage has on quarterback rating.
a. Does the sack yardage predict the QB rating?
b. What is the regression equation and is this a significant equation?
c. What is your prediction for the QB rating of a quarterback that has 300 sack yards?

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Question A
This fact should be checked in the p-value associated to the t-statistic of the sac yardage coefficient. In this case, the t-stat is -2.806 and its associated p-value is 0.0072. Since this value is smaller than 0.05, we can conclude that, with 95% confidence, the sack yardage does predict the QB ...

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