Scottish hill races considered in Exercise 14 are run by both men and women. We can combine

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Scottish hill races considered in Exercise 14 are run by both men and women. We can combine the data to fit a single model for both. Here is one such model. The variable Dist*Sex is the product of the variable Distance and the indicator variable Sex, which is 0 for women and 1 for men.

a) What is the purpose of including the variable Dist*Sex in this model?
b) What does the coefficient of that variable mean in this model?

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Intro Stats

ISBN: 9780134668420

5th Edition

Authors: Richard D De Veaux, Paul F Velleman, David E Bock, Nick Horton

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