Paul Krugman, Robin Wells
ISBN #9781464110375
4th Edition
265 Questions
Homework Questions
Macroeconomics is a comprehensive exploration of how scarcity, choice, and market mechanisms shape economic outcomes at both individual and national levels. The book begins by laying out first principles such as opportunity cost and marginal analysis, then advances into critical models and theories including supply and demand, price controls, and international trade dynamics. It further examines macroeconomic indicators like GDP, CPI, and the roles of fiscal and monetary policies, highlighting how government interventions and institutions such as the Federal Reserve influence stability and growth. Additionally, the text addresses long-run growth, inflation, unemployment, banking challenges, and open-economy considerations, providing a holistic framework for understanding modern economic systems.
Chapter 1
First Principles
Chapter 2
Economics Models: Trade-offs and Trade
Chapter 3
Supply and Demand
Chapter 4
Price Controls and Quotas: Meddling with Markets
Chapter 5
International Trade
Chapter 6
Macroeconomics: The Big Picture
Chapter 7
GDP and the CPI: Tracking the Macroeconomy
Chapter 8
Unemployment and Inflation
Chapter 9
Long-Run Economic Growth
Chapter 10
Savings, Investment Spending, and the Financial System
Chapter 11
Income and Expenditure
Chapter 12
Aggregate Demand and Aggregate Supply
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Chapter 13
Fiscal Policy
Chapter 14
Money, Banking, and the Federal Reserve System
Chapter 15
Monetary Policy
Chapter 16
Inflation, Disinflation, and Deflation
Chapter 17
Crises and Consequences
Chapter 18
Macroeconomics: Events and Ideas
Chapter 19
Open-Economy Macroeconomics
Problem 1
The small economy of Pizzania produces three goods (bread, cheese, and pizza), each produced by a separate company. The bread and cheese companies produce all the inputs they need to make bread and cheese, respectively. The pizza company uses the bread and cheese from the other companies to make its pizzas. All three companies employ labor to help produce their goods, and the difference between the value of goods sold and the sum of labor and input costs is the firm's profit. The accompanying table summarizes the activities of the three companies when all the bread and cheese produced are sold to the pizza company as inputs in the production of pizzas. a. Calculate GDP as the value added in production. b. Calculate GDP as spending on final goods and services. c. Calculate GDP as factor income.
Karan Sood Numerade Educator
Problem 2
In the ancient country of Roma, only two goods, spaghetti and meatballs, are produced. There are two tribes in Roma, the Tivoli and the Frivoli. By themselves, the Tivoli each month can produce either 30 pounds of spaghetti and no meatballs, or 50 pounds of meatballs and no spaghetti, or any combination in between. The Frivoli, by themselves, each month can produce 40 pounds of spaghetti and no meatballs, or 30 pounds of meatballs and no spaghetti, or any combination in between. a. Assume that all production possibility frontiers are straight lines. Draw one diagram showing the monthly production possibility frontier for the Tivoli and another showing the monthly production possibility frontier for the Frivoli. Show how you calculated them. b. Which tribe has the comparative advantage in spaghetti production? In meatball production? In A.D. 100 the Frivoli discover a new technique for making meatballs that doubles the quantity of meatballs they can produce each month. c. Draw the new monthly production possibility frontier for the Frivoli. d. After the innovation, which tribe now has an absolute advantage in producing meatballs? In producing spaghetti? Which has the comparative advantage in meatball production? In spaghetti production?
Oluwadamilola Ameobi Numerade Educator
Problem 3
In the late eighteenth century, the price of bread in New York City was controlled, set at a predetermined price above the market price. a. Draw a diagram showing the effect of the policy. Did the policy act as a price ceiling or a price floor? What kinds of inefficiencies were likely to have arisen when the controlled price of bread was above the market price? Explain in detail. One year during this period, a poor wheat harvest caused a leftward shift in the supply of bread and therefore an increase in its market price. New York bakers found that the controlled price of bread in New York was below the market price. c. Draw a diagram showing the effect of the price control on the market for bread during this one-year period. Did the policy act as a price ceiling or a price floor? d. What kinds of inefficiencies do you think occurred during this period? Explain in detail.
Problem 4
For each of the following trade relationships, explain the likely source of the comparative advantage of each of the exporting countries. a. The United States exports software to Venezuela, and Venezuela exports oil to the United States. b. The United States exports airplanes to China, and China exports clothing to the United States. c. The United States exports wheat to Colombia, and Colombia exports coffee to the United States.
Problem 5
From 2009 to $2014,$ Eastlandia experienced large fluctuations in both aggregate consumer spending and disposable income, but wealth, the interest rate, and expected future disposable income did not change. The accompanying table shows the level of aggregate consumer spending and disposable income in millions of dollars for each of these years. Use this information to answer the following questions. a. Plot the aggregate consumption function for Eastlandia. b. What is the marginal propensity to consume? What is the marginal propensity to save? c. What is the aggregate consumption function?
Problem 6
Given the following information about the closed economy of Brittania, what is the level of investment spending and private savings, and what is the budget balance? What is the relationship among the three? Is national savings equal to investment spending? There are no government transfers. $$\begin{array}{ll} \mathrm{GDP}=\$ 1,000 \mathrm{million} & T=\$ 50 \mathrm{million} \\ C=\$ 850 \mathrm{million} & G=\$ 100 \mathrm{million} \end{array}$$
Md.Daniyal Arshad Numerade Educator
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