A Regression Model Relating Units Sold Y), Price X1), and Whether

question 48

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.
$\hat { Y }$ =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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Medical Database

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Yes/No Data Type

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