15.4 Review and Practice

Concept Problems

1. David Ricardo, a famous English economist of the 19th century, stressed that a nation has a comparative advantage in those products for which its efficiency relative to other nations is the highest. He argued in favor of specialization and trade based on comparative, not absolute, advantage. From a global perspective, what would be the “advantage” of such a system?
2. For several months prior to your vacation trip to Naples, Italy, you note that the exchange rate for the dollar has been increasing relative to the euro (that is, it takes more euro to buy a dollar). Are you pleased or sad? Explain.
3. Who might respond in a way different from your own to the falling value of the euro in Question 2?
4. Suppose a nation has a deficit on capital account. What does this mean? What can you conclude about its balance on current account?
5. Suppose a nation has a surplus on capital account. What does this mean? What can you conclude about its balance on current account?
6. The following analysis appeared in a newspaper editorial:

   “If foreigners own our businesses and land, that’s one thing, but when they own billions in U.S. bonds, that’s another. We don’t care who owns the businesses, but our grandchildren will have to put up with a lower standard of living because of the interest payments sent overseas. Therefore, we must reduce our trade deficit.”

   Critically analyze this editorial view. Are the basic premises correct? The conclusion?

7. In the years prior to the abandonment of the gold standard, foreigners cashed in their dollars and the U.S. Treasury “lost gold” at unprecedented rates. Today, the dollar is no longer tied to gold and is free to float. What are the fundamental differences between a currency based on the gold standard and one that is allowed to float? What would the U.S. “lose” if foreigners decided to “cash in” their dollars today?
8. Can there be a deficit on current account and a deficit on capital account at the same time? Explain.
9. Suppose the people of a certain economy increase their spending on foreign-produced goods and services. What will be the effect on real GDP and the price level in the short run? In the long run?
10. Now suppose the people of a certain economy reduce their spending on foreign-produced goods and services. What will be the effect on real GDP and the price level in the short run? In the long run?
11. Canada, Mexico, and the United States have a free trade zone. What would be some of the advantages of having a common currency as well? The disadvantages? Do you think it would be a good idea? Why or why not?
12. The text says that the U.S. capital account surplus necessarily implies a current account deficit. Suppose that the United States were to undertake measures to eliminate its capital account surplus. What sorts of measures might it take? Do you think such measures would be a good idea? Why or why not?

Numerical Problems

1. For each of the following scenarios, determine whether the aggregate demand curve will shift. If so, in which direction will it shift and by how much?
   1. A change in consumer preferences leads to an initial $25-billion decrease in net exports. The multiplier is 1.5.
   2. A change in trade policies leads to an initial $25-billion increase in net exports. The multiplier is 1.
   3. There is an increase in the domestic price level from 1 to 1.05, while the price level of the country’s major trading partner does not change. The multiplier is 2.
   4. Recession in a country’s trading partner lowers exports by $20 billion. The multiplier is 2.
2. Fill in the missing items in the table below. All figures are in U.S. billions of dollars.

   	U.S. exports	U.S. imports	Domestic purchases of foreign assets	Rest-of-world purchases of U.S. assets
   a.	100	100	400
   b.	100	200		200
   c.	300		400	600
   d.		800	800	1,100

3. Suppose the market for a country’s currency is in equilibrium and that its exports equal $700 billion, its purchases of rest-of-world assets equal $1,000 billion, and foreign purchases of its assets equal $1,200 billion. Assuming it has no international transfer payments and that output is measured as GNP:
   1. What are the country’s imports?
   2. What is the country’s balance on current account?
   3. What is the country’s balance on capital account?
4. Suppose that the market for a country’s currency is in equilibrium and that its exports equal $400, its imports equal $500 billion, and rest-of-world purchases of the country’s assets equal $100. Assuming it has no international transfer payments and that output is measured as GNP:
   1. What is the country’s balance on current account?
   2. What is the country’s balance on capital account?
   3. What is the value of the country’s purchases of rest-of-world assets?
5. The information below describes the trade-weighted exchange rate for the dollar (standardized at a value of 100) and net exports (in billions of dollars) for an eight-month period.

   Month	Trade-weighted exchange rate	Net exports
   January	100.5	−9.8
   February	99.9	−11.6
   March	100.5	−13.5
   April	100.3	−14.0
   May	99.6	−15.6
   June	100.9	−14.2
   July	101.4	−14.9
   August	101.8	−16.7

   1. Plot the data on a graph.
   2. Do the data support the expected relationship between the trade-weighted exchange rate and net exports? Explain.
6. The graph below shows the foreign exchange market between the United States and Japan before and after an increase in the demand for Japanese goods by U.S. consumers.
   1. If the exchange rate was free-floating prior to the change in demand for Japanese goods, what was its likely value?
   2. After the change in demand, the free-floating exchange rate would be how many yen per dollar?
   3. If the Japanese central bank wanted to keep the exchange rate fixed at its initial value, how many dollars would it have to buy?

7. Suppose Japan relaxes its restrictions on imports of foreign goods and services and begins importing more from the United States. Illustrate graphically how this will affect the U.S. exchange rate, price level, and level of real GDP in the short run and in the long run. How will it affect these same variables in Japan? (Assume both economies are initially operating at their potential levels of output.)
8. Suppose U.S. investors begin purchasing assets in Mexico. Illustrate graphically how this will affect the U.S. exchange rate, price level, and level of real GDP in the short run and in the long run. How will it affect these same variables in Mexico? (Assume both economies are initially operating at their potential levels of output.)
9. Suppose foreigners begin buying more assets in the United States. Illustrate graphically how this will affect the U.S. exchange rate, price level, and level of real GDP in the short run and in the long run. (Assume the economy is initially operating at its potential output.)