Macroeconomics
Macroeconomics
10th Edition
ISBN: 9780134896441
Author: ABEL, Andrew B., BERNANKE, Ben, CROUSHORE, Dean Darrell
Publisher: PEARSON
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Chapter 4, Problem 3AP

a)

To determine

To show the effects of a temporary increase in the price of oil.

b)

To determine

To show the effect of permanent increase in price of oil.

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In the Neoclassical model of determination of income in the long run we assumed that aggregate consumption was an increasing function of disposable income, , and nothing else. Suppose that instead we assume that consumption is an increasing function of disposable income, , and a decreasing function of the real interest rate, . Provide an economic rationale for making consumption a function of the real interest rate. How does this assumption change the national saving function relative to the benchmark model Using the model developed in (1), use a diagram for the market for loanable funds to describe what happens to national saving, national investment, and the real interest rate when government expenditure increases. Make sure to also explain in your own words the economic intuition of your results.
Assume that the economy is at full-employment equilibrium at point A. Using the following graph as a reference, calculate the impact of a sudden decline in consumer confidence that reduces autonomous consumption by $200 billion at the price level Pf. Assume MPC = 0.5. Price Level (average price) 100 90 80 70 60 F50 40 AS 30 20 10 0 200 250 300 350 400 450 500 550 600 650 700 QF Real Output (in $ billions per year) AD Instructions: Enter your responses as a whole number.
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