Question: Suppose a dummy variable multiple regression model is fit with a single dummy variable ???? and a single explanatory variable ????. If the resulting fitted

Suppose a dummy variable multiple regression model is fit with a single dummy variable ???? and a single explanatory variable ????. If the resulting fitted model is ˆ???? = 239.8

− 42.7???? + 19.2???? − 2.6????????, determine the

(a) determine the equation of the fitted regression line for Z = 0.

(b) determine the equation of the fitted regression line for Z = 1.

(c) determine the difference between the predicted values of ???? when ???? = 5 for

???? = 0 and ???? = 1.

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