EBK PRINCIPLES OF ECONOMICS
7th Edition
ISBN: 8220102958395
Author: Mankiw
Publisher: CENGAGE L
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Question
Chapter 34, Problem 1QR
To determine
Liquidity preference theory and downward sloping of aggregate demand .
Expert Solution & Answer
Explanation of Solution
Keynes in his classic book “The General Theory of Employment, Interest, and Money”, proposed the theory of liquidity preference, according to which, the interest rate adjusts to bring money supply and money demanded into balance. In other words, it is the theory of how the interest rate is determined.
According to the theory, the aggregate–demand curve slopes downward because
- (1) An increase in
price level raises money demand. - (2) Higher money demand causes the interest rate to rise.
- (3) A rise in interest rate reduces the quantity of goods and services demanded.
Thus, there exists an inverse relationship between the price level and aggregate demand, making the AD curve slopes downward.
Economics Concept Introduction
Concept introduction:
Aggregate demand (AD): Aggregate demand refers to the total value of the goods and services that are demanded at a particular price in a given period.
Money supply: Money supply refers to the total amount of monetary assets circulating in an economy during a particular period.
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Problem 3
You are given the following demand for European luxury automobiles:
Q=1,000 P-0.5.2/1.6
where P-Price of European luxury cars
PA = Price of American luxury cars
P, Price of Japanese luxury cars
I= Annual income of car buyers
Assume that each of the coefficients is statistically significant (i.e., that they passed the t-test).
On the basis of the information given, answer the following questions
1. Comment on the degree of substitutability between European and American luxury cars and
between European and Japanese luxury cars. Explain some possible reasons for the results in
the equation.
2. Comment on the coefficient for the income variable. Is this result what you would expect?
Explain.
3. Comment on the coefficient of the European car price variable. Is that what you would expect?
Explain.
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