Question: Problem 4. A computer manufacturer has developed a regression model relating Sales ( y ) with four independent variables. The four independent variables are Price

Problem 4. A computer manufacturer has developed a regression model relating Sales (y) with four independent variables. The four independent variables are Price (in dollars), Competitor's Price (in dollars), Advertising, and Type of computer produced (Type = 0 if desktop, Type = 1 if laptop). Part of the regression results are shown below.

ANOVA df SS MS Regression 4 27641631.121 6910407.780 Residual 35 42277876.624 1207939.332 Coefficients Standard Error t Stat Intercept 2268.233 1237.880 Price 0.803 0.316 Competitor's 0.859 0.281 Price Advertising 0.216 0.079 Type 567.806 373.400

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