Question 1. Suppose That GM's Smith estimated the following regression equation for Chevrolet automobiles:
Qc= 100,000 - 100Pc + 2,000N + 50I + 30PF - 1,000PG + 3A + 40,000PI
Where:
Qc = quantity demanded per year of Chevrolet automobiles
Pc = price of Chevrolet automobiles, in dollars
N = population of the U. S., in millions
I = per capita disposable income, in dollars
PF = price of Ford automobiles, in dollars
PG = real price of gasoline, in cents per gallon
A = advertising expenditures by Chevrolet, in dollars per year
PI= credit incentives to purchase Chevrolet, in percentage points below the rate of interest on borrowing in the absence of incentives
Question 2
Starting with the estimated demand function for Chevrolets given in Problem 2, assume that the average value of the independent variable changes to:
N = 225 million
I = $12,000
PF = $10,000
PG = 100 cents
A = $250,000
PI = 0
(i.e. the incentives are phased out)
Find the equation for the new demand curve for Chevrolets. Substitute the given value of independent variables into the equation in problem 2. Show the new equation as:
Qc= a - 100Pc, a is a number.
For N, enter 225 not 225,000,000
Find the value of Qc if Pc is $10,000