Macroeconomics Homework 3 Fall 2011 by BF1ZWkx


									                        Macroeconomics Homework 3

1.James, John and Henry are all Americans. Identify the immediate effect of each of
the following circumstances on U.S. GDP and its components.
a. James receives a Social Security check.
b. John buys an Italian sports car.
c. Henry buys domestically produced tools for his construction company.

2.A French citizen buys an automobile produced in Taiwan by a Japanese auto
a. How would this event affect Taiwan’s net exports, GDP, and GNP? Explain why.
b. How would this event affect Japan’s net exports, GDP, and GNP? Explain why.
c. How would this event affect France’s net exports, GDP and GNP? Explain why.

3.A wind farm in Iowa of USA buys a large turbine generator from a Swedish-owned
factory located in Connecticut of USA that uses local workers. Discuss how this event
would affect the U.S. GDP, U.S. GNP, and the components of GDP.

4.Suppose the government borrows $20 billion more next year than this year.
a. Use a supply-and-demand diagram to analyze this policy.
b. Does the interest rate rise or fall?
c. What happens to private investment? To private saving? To public saving? To
national saving? Compare the size of the changes to the $20 billion of extra
government borrowing.
d. How does the elasticity of supply of loanable funds affect the size of these
e. How does the elasticity of demand of loanable funds affect the size of these

5.Suppose a presidential candidate promises to increase the government budget
surplus and claims that doing so will stop U.S. citizens from investing in foreign
companies and increase the value of the dollar. Evaluate this promise.

6.Explain how each of the following changes the money supply, the value of money,
and the price level.
a. the Fed buys bonds.
b. the Fed raises the discount rate.
c. the Fed raises the reserve requirement.

                                   Bank of Springfield
         Assets                               Liabilities
         Reserves                   $19,200    Deposits            $240,000
         Loans                      228,000

a. What is the reserve requirement if the Bank of Springfield has lent out all the
money it can given its level of deposits?
b. What is the value of the money multiplier, assuming the Bank of Springfield and all
other banks have the same reserve ratio?
c. What quantity of excess reserves does the Bank of Springfield now hold if the Fed
requires a reserve ratio of 6 percent?

8.For each of the following events, explain the short-run and long-run effects on
output and the price level, assuming policymakers take no action.
a. The stock market declines sharply, reducing consumer's wealth.
b. The federal government increases spending on national defense.
c. A technological improvement raises productivity.
d. A recession overseas causes foreigners to buy fewer U.S. goods.

9.Suppose economists observe that an increase in government spending of $10 billion
raises the total demand for goods and services by $30 billion.
a. If these economists ignore the possibility of crowding out, what would they
estimate the marginal propensity to consume to be?
b. Now suppose the economists allow for crowding out. Would their new estimate of
the marginal propensity to consume be larger or smaller than their initial one?


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