1、整理布兰查德宏观经济学第五版课后题答案Answers to end-of-chapter problemsChapter 1Quick Check1. a. True. b. True. c. False. d. False/uncertain. The rate of growth was higher during the decade beginning in 1996 than duringthe previous two decades, but it is probably unrealistic to expect productivity to continue to grow
2、 at such a fast pace. e. False. There are problems with the statistics, but the consensus is that growth in China has been high. f. False. The European “unemployment miracle” refers to the relatively low European unemployment rate in the 1960s and the early 1970s. g. True. h. True.2. a. More flexibl
3、e labor market institutions may lead to lower unemployment, but there are questions about how precisely to restructure these institutions. The United Kingdom has restructured its labor market institutions to resemble more closely U.S. institutions and now has a lower unemployment rate than before th
4、e restructuring. On the other hand, Denmark and the Netherlands have relatively low unemployment rates while maintaining relatively generous social insurance programs for workers. In addition, some economists argue that tight monetary policy has at least something to do with the high unemployment ra
5、tes in Europe. b. Although the Euro will remove obstacles to free trade between European countries, each country will be forced to give up its own monetary policy. Dig Deeper3. a. The Chinese government has encouraged foreign firms to produce in China. Since foreign firms are typically more producti
6、ve than Chinese firms, the presence of foreign firms has lead to an increase in Chinese productivity. The Chinese government has also encouraged joint ventures between foreign and Chinese firms. These joint ventures allow Chinese firms to learn from more productive foreign firms. b. The recent incre
7、ase in U.S. productivity growth has been a result of the development and widespread use of information technologies. c. The United States is a technological leader. Much of U.S. productivity growth is related to the development of new technologies. China is involved in technological catch-up. Much o
8、f Chinese productivity growth is related to adopting existing technologies developed abroad. d. Its not clear to what extent China provides a model for other developing countries. High investment seems a good strategy for countries with little capital, and encouraging foreign firms to produce (and p
9、articipate in joint ventures) at home seems a good strategy for countries trying to improve productivity. On the other hand, the degree to which Chinas centralized political control has been important in managing the pace of the transition and in protecting property rights of foreign firms remains o
10、pen to question. 4. a. 10 years: (1.018)10=1.195 or 19.5 % higher 20 years: 42.9% higher 50 years: 144% higher b. 10 years: 31.8 % higher 20 years: 73.7 % higher 50 years: 297.8% higher c. Take output per worker as a measure of the standard of living. 10 years: 1.195/1.318=1.103, so the standard of
11、living would be 10.3% higher; 20 years: 21.6 % higher 50 years: 63% higher d. No. Labor productivity growth fluctuates a lot from year to year. The last few years may represent good luck. It is too soon to tell whether there has been a change in the trend observed since 1970.5. a. 13.2(1.034)t=2.8(1
12、.088)t t = ln(13.2/2.8)/ln(1.088/1.034) t 30.5 yrs This answer can be confirmed with a spreadsheet, for students unfamiliar with the use of logarithms. b. No. At current growth rates, Chinese output will exceed U.S. output within 31 years, but Chinese output per person (the Chinese standard of livin
13、g) will still be less than U.S. output per person.Explore Further6. a/c. As of February 2008, there had been 5 recessions (according to the traditional definition) since 1960. Seasonally-adjusted annual percentage growth rates of GDP (in chained 2000 dollars) are given below. 1969:4 -1.9 1981:4 -4.9
14、 1970:1 -0.7 1982:1 -6.4 1974:3 -3.8 1990:4 -3.0 1974:4 -1.6 1991:1 -2.0 1975:1 -4.7 1980:2 -7.81980:3 -0.7 With respect to the note on 2001, the growth rates for 2001 are given below. 2001:1 -0.5% 2001:2 1.2% 2001:3 -1.4% 2001:4 1.6%7. a-b. % point increase in the unemployment rate for the 5 recess
15、ions 1969-70 0.7 1981-82 1.1 1974-75 3.1 1990-91 0.9 1980 0.6 The unemployment rate increased by 1.5 percentage points between January 2001 and January 2002. Chapter 2Quick Check1. a. True. b. True/Uncertain. Real GDP increased by a factor of 25; nominal GDP increased by a factor of 21. Real GDP per
16、 person increased by a factor of 4. c. False. d. True.e. False. The level of the CPI means nothing. The rate of change of the CPI is one measure of inflation. f. Uncertain. Which index is better depends on what we are trying to measureinflation faced by consumers or by the economy as a whole. g. Fal
17、se. The underground economy is large, but by far the majority of the measured unemployed in Spain are not employed in the underground economy. 2. a. No change. This transaction is a purchase of intermediate goods. b. +$100: personal consumption expenditures c. +$200 million: gross private domestic f
18、ixed investment d. +$200 million: net exportse. No change. The jet was already counted when it was produced, i.e., presumably when Delta (or some other airline) bought it new as an investment.3. a. The value of final goods =$1,000,000, the value of the silver necklaces. b. 1st Stage: $300,000. 2nd S
19、tage: $1,000,00-$300,000=$700,000. GDP: $300,000+$700,000=$1,000,000. c. Wages: $200,000 + $250,000=$450,000. Profit: ($300,000-$200,000)+($1,000,000-$250,000-300,000) =$100,000+$450,000=$550,000. GDP: $450,000+$550,000=$1,000,000.4. a. 2006 GDP: 10($2,000)+4($1,000)+1000($1)=$25,0002007 GDP: 12($3,
20、000)+6($500)+1000($1)=$40,000 Nominal GDP has increased by 60%. b. 2006 real (2006) GDP: $25,0002007 real (2006) GDP: 12($2,000)+6($1,000)+1000($1)=$31,000 Real (2006) GDP has increased by 24%. c. 2006 real (2007) GDP: 10($3,000)+4($500)+1,000($1)=$33,000 2007 real (2007) GDP: $40,000. Real (2007) G
21、DP has increased by 21.2%.d. The answers measure real GDP growth in different units. Neither answer is incorrect, just as measurement in inches is not more or less correct than measurement in centimeters. 5. a. 2006 base year: Deflator(2006)=1; Deflator(2007)=$40,000/$31,000=1.29 Inflation=29% b. 20
22、07 base year: Deflator(2006)=$25,000/$33,000=0.76; Deflator(2007)=1 Inflation=(1-0.76)/0.76=.32=32% c. Analogous to 4d.6. a. 2006 real GDP = 10($2,500) + 4($750) + 1000($1) = $29,000 2007 real GDP = 12($2,500) + 6($750) + 1000($1) = $35,500 b. (35,500-29,000)/29,000 = .224 = 22.4% c. Deflator in 200
23、6=$25,000/$29,000=.86 Deflator in 2007=$40,000/$35,500=1.13 Inflation = (1.13 -.86)/.86 = .31 = 31%.d. Yes, see appendix for further discussion.Dig Deeper7. a. The quality of a routine checkup improves over time. Checkups now may include EKGs, for example. Medical services are particularly affected
24、by this problem since there are continual improvements in medical technology.b. The new method represents a 10% quality increase.c. There is a 5% true price increase. The other 10% represents a quality increase. The quality-adjusted price of checkups using the new method is only 5% higher than check
25、ups using the old method last year.d. You need to know the relative value of pregnancy checkups with and without ultra-sounds in the year the new method is introduced. Still, since everyone chooses the new method, we can say that the quality-adjusted price of checkups has risen by less than 15%. Som
26、e of the observed 15% increase represents an increase in quality.8. a. Measured GDP increases by $10+$12=$22. (Strictly, this involves mixing the final goods and income approaches to GDP. Assume here that the $12 per hour of work creates a final good worth $12.)b. No. The true value of your decision
27、 to work should be less than $22. If you choose to work, the economy produces the value of your work plus a takeout meal. If you choose not to work, presumably the economy produces a home-cooked meal. The extra output arising from your choice to work is the value of your work plus any difference in
28、value between takeout and home-cooked meals. In fact, however, the value of home-cooked meals is not counted in GDP. (Of course, there are other details. For example, the value of groceries used to produce home-cooked meals would be counted in GDP. Putting such details aside, however, the basic poin
29、t is clear.)Explore Further 9. a. Quarters 2000:III, 2001:I, and 2001:III had negative growth.b. The unemployment rate increased after 2000, peaked in 2003, and then began to fall. The participation rate fell steadily over the periodfrom 67.1% in 2000 to 66% in 2004. Presumably, workers unable to fi
30、nd jobs became discouraged and left the labor force. c. Employment growth slowed after 2000. Employment actually fell in 2001. The employment-to-population ratio fell between 2000 and 2004. d. It several years after the recession for the labor market to recover.Chapter 3Quick Check1. a. True. b. Fal
31、se. Government spending excluding transfers was 19% of GDP. c. False. The propensity to consume must be less than one for our model to make sense. d. True. e. False. f. False. The increase in output is one times the multiplier. g. False.2. a. Y=160+0.6(Y-100)+150+150 Y=1000 b. YD=Y-T=1000-100=900 c. C=160+0.6(900)=7003. a. Equilibrium output is 1000. Total demand=C+I+G=700+150+150=1000. Total demand equals production. We used this equilibrium condition to solve for output.b. Output falls by (40 times the multiplier) = 4
