# Answer to Question #73699 in Microeconomics for Zulfiqar

Question #73699
The MacWend Drive-In has determined that demand for hamburgers is given by the following equation: Q = 205.2 + 23.0A - 200.0PM + 100.0PC + 0.5I (1.85) (2.64) (-5.61) (2.02) (4.25) where Q is the number of hamburgers sold per month (in 1,000s), A is the advertising expenditures during the previous month (in \$1,000), PM is the price of MacWend burgers (dollars), PC is the price of hamburgers of the company's major competitor (dollars), and I is income per capita in the surrounding community (in \$1,000). The t-statistics for each coefficient is shown in parentheses below each coefficient. (A)Are the signs of the individual coefficients consistent with predictions from economic theory? Explain. (B). If A = \$5,000, PM = \$1, PC = \$1.20, and I = \$20,000, how many hamburgers will be demanded? (C). What is the advertising elasticity at A = \$5,000?
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2018-02-21T09:00:07-0500
A) No, the signs of individual coefficients do not match the forecasts of economic theory, because some of the coefficients of t-statistics are not within the limits of this econometric model. Therefore, this model needs to improve the values of t statistics to improve the results.
B) If A = \$ 5,000, PM = \$ 1, PC = \$ 1.20, and I = \$ 20,000, then Q = 205.2 + 23.0*5 - 200.0*1 + 100.0*1.20 + 0.5*20= 250.2
C) AED = (delQ/Q)/(delA/A) = ((23/250.2) / (1/5)) = 0.46

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