EDONSQDS Check Your Understanding Topics 4 6 1. In the regression model I; = 05+ ,3le + 133.0,- +3(X,- xD,}+u,- , whereXis a continuous variable and!) is abinary variable, 33; a. indicates the slope ofthe regression when 1):]. b. has a standard errorthat is not normally distributed evenin large samples since Dis not a normally distributed variable. c. indicates the di'e-reuce in the slop-a; ofthe two regressions for subsamples dened by D,- _ d.liasno meaning since (Xi: >