A multiple linear regression model involving one qualitative and one quantitative indepe...

A multiple linear regression model involving one qualitative and one quantitative independent variable produced this prediction equation:

a. Which of the two variables is the quantitative variable? Explain.

b. If can take only the values 0 or 1, find the two possible prediction equations for this experiment.

c. Graph the two equations found in part b. Compare the shapes of the two curves.