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财政学哈维罗森第七版课后习题答案(英文).pdf

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1、Instructors Manual to accompanyPublic Finance,Seventh Edition,by Harvey S.RosenSuggested Answers to End-of-Chapter Discussion QuestionsSome of the questions have no single correct“answer-reasonable people can go off in different directions.In such cases,the answers provided here sketch only a few po

2、ssibilities.Chapter 1-Introduction1.a.Putins statement is consistent with an organic conception of government.Individuals and their goals are less important than the state.b.Rehnquist makes a clear statement of the mechanistic view of the state.2.a.A person with an organic conception of the state mi

3、ght react favorably,arguing that even if an individual owner is worse off because he must show only French movies,the nation is better off because it achieves more unity.b.A libertarian would certainly reject this policy and the reasoning behind it there is no national interest“independent of the in

4、terests of individuals,and people should have the right to run their lives in the way that they prefer including seeing whatever movies they want.c.A social democrat would try to balance these two aims,and it is hard to predict how he or she would come out.3.The mechanistic view of government says t

5、hat the government is a contrivance created by individuals to better achieve their individual goals.Within the mechanistic tradition,people could disagree on the obesity tax.Libertarians would say that people can decide what is best for themselves-whether to consume high calorie food-and do not need

6、 prodding from the government.In contrast,social democrats might argue that people are too short sighted to know what is good for them,so that government-provided inducements are appropriate.4.a.If the size of government is measured by direct expenditures,the mandate does not directly increase it.Co

7、sts of compliance,however,may be high and would appear as an increase in a regulatory budget.b.Ifs hard to say whether this represents an increase or decrease in the size of government.One possibility is that GDP stayed the same,and government purchases of goods and services fell.Another is that gov

8、ernment purchases of goods and services grew,but at a slower rate than the GDP.One must also consider coincident federal credit and regulatory activities and state and local budgets.c.The federal budget would decrease if grants-in-aid were reduced.However,if state and local governments offset this b

9、y increasing taxes,the size of the government sector as a whole would not go down as much as one would have guessed.5.The inflation erodes the real value of the debt by 0.021 x 311 billion or 6.5 billion.The fact that inflation reduces the real debt obligation means that this figure should be includ

10、ed as revenue to the government.6.The federal government grew by$450 billion.However,because the price level went up by 16 percent,in terms of 2001 dollars this amounted to a real increase of$224 billion(=$1.86 trillion-1.16*$1.41 trillion=$1.86 trillion-$1.64 trillion).Note that the increase in pri

11、ces of 16 percent in the Rosen text(p.18)differs from official sources.According to the 2004 Economic Report of the President(Table B-60),the CPI-U was 177.1 in 2001 and was 144.5 in 1993,an increase of 22.5 percent,not 16 percent.If one uses these numbers,government spending increased in constant 2

12、001 dollars from$1.72 trillion in 1993 to$1.86 trillion,or$140 billion.As a proportion of GDP,federal spending in 1993 was 21.2 percent and in 2001 it was 18.2 percent.Hence,by one measure,the size of government fell and by the other measure,it grew.To get a more complete answer,one would want data

13、on the population(to compute real spending per capita).Also,it would be useful to add in expenditures by state and local governments,to see if the total size of government fell.Also,although it would be harder to measure,one would want to try to gain some sense of how the regulatory burden on the ec

14、onomy grew during this time period.Chapter 2-Tools of Positive Analysis1.The reality that astronomers are trying to understand is not influenced by any“policies”that astronomers might implement.That is,planets and stars do act any differently when they are being analyzed,whereas people can change th

15、eir behavior.Moreover,the parameters with which astronomers must deal are constant over time(at least in the“short-run“of hundreds of years),while the parameters in economics can quickly change over time and across geography.2.A change in the marginal tax rate changes the individuals net wage.This g

16、enerates both an income effect and a substitution effect.As long as leisure is a normal good,these effects work in opposite directions.Hence,one cannot tell a priori whether labor supply increases or decreases.One could ask taxpayers to describe how they would change their behavior under the proposa

17、l,but it is hard to imagine that this would yield useful results.In a social experiment,a control group would confront the status quo,and an experimental group would face the new tax regime.This is clearly infeasible.Econometric investigation of labor supply seems the best approach,particularly if d

18、ata associated with past changes in tax rates can be brought to bear on the problem.3.Generally,economic outcomes are affected by a number of variables some of which are observed and others of which are unobserved.Economists often cannot perform controlled,randomized experiments,which makes it diffi

19、cult to assess how any single variable affects a given outcome.Moreover,even in the cases when experiments are run(e.g.,the Negative Income Tax experiment or the RAND Health Insurance Experiment),a number of unintended behaviors can arise because people know they are in the experiment for a short am

20、ount of time and because of lack of generalizability.In the medical example here,brain impairment may be due to a number of factors that are either observed are unobserved.Ecstasy users clearly are not a random sample of the population,but are likely to differ in terms of their attitudes towards ris

21、k,their discount rates,and potentially many other ways.Hence,one cannot definitively conclude whether brain impairment is due to Ecstasy or some variable that is correlated with Ecstasy use.There are numerous non-experimental methods that may be helpful in inferring the causal effect of Ecstasy.For

22、example,if there were a plausible instrumental variable(perhaps the punitiveness of the drug laws in a state)that was correlated with the supply of Ecstasy but not otherwise correlated with the outcomes of interest,one may be able to estimate the causal effect of Ecstasy on long-run developmental pr

23、oblems.4.The text points out the pitfalls of social experiments:the problem of obtaining a random sample and the problems of extending results beyond the scope of the experiment.Participants in the study had found it to their advantage to be a part of the experiment,which may have resulted in a self

24、-selected population unrepresentative of the wider group of health care consumers.In addition,the RAND Health Insurance Experiment was of limited duration,after which the participants would move to some other health plan.This design could induce certain behavior in the short-run that would not neces

25、sarily be present if the health insurance coverage were permanent rather than transitory.Further,physicians9 standard practices are largely determined by the circumstances of the population as a whole,not the relatively small experimental group.5.First,it is important to note that the numbers on pag

26、e 32 of Rosens text actually show the surplus,not the deficit.That is,the negative surplus of$221.2 in 1990 is actually a deficit,while the positive surplus of$236.4 is a surplus.There is a very weak,negative relationship between surpluses and interest rates(the correlation coefficient is-.043),or p

27、ut differently,a weak,positive relationship between deficits and interest rates.However it is expressed,it is weak by“eyeballing“the data,it might appear that larger deficits lead to lower interest rates(for example,by comparing the data from 1980 with the data from 2000).One clearly would need more

28、 data to investigate this question.One would want to look at deficits relative to some benchmark,such as GDP.One would want to express both interest rates and deficits in real terms,rather than nominal terms.One would like to control for other factors that can affect interest rates,such as monetary

29、policy and the level of economic activity.Finally,one would want to determine which way the causality runs-do larger deficits cause higher interest rates,or do higher interest rates cause larger deficits(since,by construction,one of the largest items in the federal budget is interest on the debt).Ch

30、apter 4 Public Goods1.a.Wilderness area is an impure public good-at some point,consumption becomes nonrival;it is,however,nonexcludable.b.Water from a municipal water supply is both rival in consumption and excludable.My consumption of water precludes you from consuming the same water,thus it is riv

31、al.The municipality can control who consumes water by shutting off the flow to customers,thus it is excludable.This is a useful question for showing that not all publicly owned facilities are public goods.c.Medical school education is a private good.d.Television signals are nonrival in consumption.e

32、.An Internet site is nonrival in consumption(although it is excludable).2.We assume that Cheetahs utility does not enter the social welfare function;hence,her allocation of labor supply across activities does not matter.a.The public good is patrol;the private good is fruit.b.Recall that efficiency r

33、equires MRSTARZAN+MRSJANE=MRT.MRSTARZAN=MRSJANE=2.But MRT=3.Therefore,MRSTARZAN+MRSJANE MRT.To achieve an efficient allocation,Cheetah should patrol more.3.A pure public good is nonrival in consumption,thus it is necessary to determine whether or not this is the case with the highway.That is,if the

34、additional cost of another person“consuming“the highway is zero,then it is a public good.So,as long as the highway is not congested,then it can be considered to be a public good.However,adding another motorist to an already congested roadway can cause traffic jams that cost motorists more time to tr

35、avel the highway,which would represent nonzero costs to having an additional person use the highway.Therefore,the congestion of the roadway determines whether or not we could designate it as a public good.Note that we are assuming throughout that the highway is nonexcludable.To determine whether or

36、not the privatization of the highway is a sensible idea,it is necessary to consider the advantages and disadvantages of such an action.First,if the market structure is such that privatizing the highway would result in a monopolist in control of the highway,then this would be inefficient.Also,it woul

37、d be difficult for the government to write a complete contract for maintaining the highway,which would also cause inefficiencies that would result from the privatization of the road.However,if the government owns the highway,it might not have the appropriate incentives to maintain it properly.In suc

38、h a case,even ownership by a private monopolist might be a sensible solution.4.The benefits of maintaining the incomes of the poor accrue largely to the recipients of welfare,not to society as a whole.Thus,it is implausible to think of welfare(or the administration of the welfare system)as a public

39、good.Unless there is a“warm-glow”from income redistribution,there is little basis for thinking that the provision of TANF,Medicaid,public housing,or food stamps offers much in terms of benefit to society as a whole.In terms of administration of welfare,it is hard to say whether or not it should be p

40、ublicly or privately administered.Private administration might be less costly.On the other hand,private administrators might have an incentive to deprive deserving individuals of benefits in order to cut costs.It could be difficult to write a contract to prevent this kind of behavior,because one can

41、not specify in advance every conceivable set of circumstances under which welfare should be granted.This kind of subjectivity was present in the 1960s,when caseworkers had a great deal of discretion in terms of which households to offer assistance to.This subjectivity led to accusations of discrimin

42、ation and,from the 1970s onward,there has been far less subjectivity in terms of defining eligibility.Since that time,eligibility is fairly mechanically related to income,assets,family structure,and a number of other observable factors.Given the current system,it seems less difficult today to monito

43、r a private firm than it would have been in the 1960s.5.A lower cost is a necessary(but not sufficient)condition to conclude that prisons should be privatized.A policy maker should be concerned both with costs and quality of prisons.Although,in principle,one could write a contract that is concerned

44、about the quality of prisons(e.g.,whether the prisoners are treated decently,whether security is adequate,and so on),Hart,Shleifer and Vishny(1997)note that it is sometimes impossible to write a complete contract because one cannot specify in advance every possible contingency.The key is whether the

45、 administration of prisons is a fairly“routine“activity where complete contracts can be written,or whether there are too many contingencies.6.As noted on page 65 of the textbook,the experimental results of Palfrey and Prisbrey(1997)suggest that there is some free riding,but some people do contribute

46、.Those authors found that,on average,people contribute a portion of their resources to the provision of a public good,and there is some free riding.That was the case in Manchester,Vermont.Also,Palfrey and Prisbrey found that when the experimental game was repeated,people were more likely to free rid

47、e.This also happened in Manchester in the second year,participation was less.7.There is no compelling reason for museums to be run by the government from the theory of public goods;thus,it is appropriate to think about privatization.Admissions to museums are clearly excludable.And viewing the artwor

48、k is also rival,because there is congestion when too many people are consuming the good.Thus,museums may be thought of as a private good rather than public good.In the United States,many great museums are run privately(not for profit),and they seem to do quite well.In terms of private versus public

49、production,the text points out that this decision should be based on relative wage and material costs in the public and private sector,administrative costs,diversity of tastes,and distributional issues.There is no compelling reason to think the private sector would have higher costs than the public

50、sector.In regards to diversity of tastes,a profit-maximizing private sector museum would likely be more responsive to consumer tastes than the public sector-e.g.,adopting new technologies that make the museum more enjoyable for the typical customer.In regards to distributional issues,it is likely th

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