In the regression model Y =a, +a,X,+a,D, +a,(X,*D)+u, X is a continuous variable and Dis dummy variable. What is a, 7

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In the regression model
Y, =a, +a,X,+a,D, +a,(X,*D)+u,
Xis a continuous variable and Dis dummy variable.
What is a7
a indicates the slope of the regression when Det
b. indicates the ditferences in the slopes of the two regressions
c has a standart enror that is not normaly distributed even in large samples since D is not normally distributed
varlable
d. has no meaning since (XID)%3D0 when Dis0
Transcribed Image Text:In the regression model Y, =a, +a,X,+a,D, +a,(X,*D)+u, Xis a continuous variable and Dis dummy variable. What is a7 a indicates the slope of the regression when Det b. indicates the ditferences in the slopes of the two regressions c has a standart enror that is not normaly distributed even in large samples since D is not normally distributed varlable d. has no meaning since (XID)%3D0 when Dis0
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