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Use of regression analysis to estimate demand

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A multiple regression analysis based on a data set that consists of 30 observations yielded the following estimated demand equation:

Q = 120 - 1.1P + 0.04 I + 0.90 A

Where P is price, I is income, and A is advertising. If price is equal to $1,000, income is equal to $20,000, and advertising expenditures are equal to $500, the what is the predicted quantity demanded? hide problem

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Use of multiple regression analysis to estimate demand

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