Refer to Exercise 12.12. Use the fitted regression model to answer the following questions.
a. Can the hypothesis of no overall predictive value of the model be rejected at the the α = .01 level?
b. Test the hypothesis that distance to the hub airport is a significant predictor of revenue at the α = .05 level.
c. Place a 95% confidence interval of the slope associated with distance to the hub airport.
d. Test the hypothesis that the slope associated with population size is greater than .5 at the α = .05 level.
In exercise

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