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Ans a: Qh = 205.2 – 200*Ph + 100*Pc + 0.023*A + 0.0005*I
Interpret the coefficients in the estimated regression.
The quanitity of hamburgers purchased is defined by the demand curve produced by the estimated regression equation
The Y axis intercept ( The point where the demand curve crosses the y-axis) of 205.2 may or may not have any meaning or value in this analysis
The coefficient of the hamburger’s price affects the quantity of the hamburger in a negative manner. An increase of one unit (one dollar) of the price of the hamburger will decrease the quantity of demand by 200 units (Quantity of hamburger purchased)
The coefficient of the price of the chicken affects the quantity of the hamburger in a positive manner. When the price of chicken increases, then the customers will tend to substitute it with hamburgers in their meals. Hence, an increase of one dollar in the price of the chicken will increase the quantity of the hamburgers purchased by 100 units
By increasing the advertising the quanitity of the hamburgers purchased will increase. For every 1000 dollars of advertising the quantity of demand increases by 23
If the household disposable income increases by $10,000 the quantity of demand of the hamburgers increases by 5
Ans b: When Ph is $1.00, Pc is $1.20, A is $5,000 and I is $20,000 the Qh will be:
Qh = 205.2 – 1*(200) + 1.2*(100) + 0.023* (5000) + 0.0005*(20,000) = 205.2-200+120+115-10 = 230.2
The forecasted demand under the above conditions for hamburgers is 230.2 which will be ~231 hamburgers.
Ans c: Calculate the own price elasticity for hamburger. If price were to decrease by 1% would the total revenue for hamburger increase or decrease? Explain.
Own price elasticity: This quantity measures the responsiveness of the quantity demanded to change in the price of the good. It measures the sensitivity of quantity demanded to a

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