Consider the regression equation 
= b0 + b1xd with b1 > 0 and a dummy variable d.If d changes from 0 to 1,which of the following is true?
A) The intercept increases by b0 + b1.
B) The intercept increases by b1.
C) The slope increases by b0 + b1.
D) The slope increases by b1.
Correct Answer:
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