Essay
A regression model relating units sold Y), price X1), and whether or not promotion was used X2 = 1 if promotion was used and 0 if it was not) resulted in the following model.
=120 - 0.03X1 =0.7X2
and the following information is provided.
n= 15 Sb₁ = .01 Sb2 = 0.1
a. Is price a significant variable?
b. Is promotion significant?
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a. t = -3; p-value is between ...View Answer
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