Question: 32. Consider a regression study involving a dependent variable y, a quantitative independent variable x1, and a categorical independent variable with two levels (level 1

32. Consider a regression study involving a dependent variable y, a quantitative independent variable x1, and a categorical independent variable with two levels

(level 1 and level 2).

a. Write a multiple regression equation relating x1 and the categorical variable to y.

b. What is the expected value of y corresponding to level 1 of the categorical variable?

c. What is the expected value of y corresponding to level 2 of the categorical variable?

d. Interpret the parameters in your regression equation.

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