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

Question 9

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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. A regression model relating units sold (y), price (x<sub>1</sub>), and whether or not promotion was used (x<sub>2</sub> = 1 if promotion was used and 0 if it was not) resulted in the following model. = 120 - 0.03x<sub>1</sub> + 0.7x<sub>2</sub> and the following information is provided.n = 15 S<sub>b1</sub> = .01 S<sub>b2</sub> = 0.1 a.Is price a significant variable? b.Is promotion significant? = 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 > 2.179; sig...

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