Barro宏观经济学5th课后习题答案.docx
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Barro宏观经济学5th课后习题答案
ExerciseforMacroeconomics
Chapter3
TRUE/FALSE
1.Thestandardoflivingofpeopleinacountryistheirpercapitaincome.
2.Diminishingreturnstolaborimpliesthateventuallythemarginalproductoflaborwillbecomenegative.
3.Themarginalproductofcapitalishowmuchoutputchangeswhencapitalincreasesbyoneunit.
4.Savingisincomethatisnotconsumed.
5.Realsavingequalsgrossinvestment.
MULTIPLECHOICE
1.Worldgrowthdatashowsthatfrom1960to2000:
a.
theUSandotherOECDcountriesgrewatmoderaterates.
c.
somecountriesparticularlyEastAsiancountriesgrewrapidly.
b.
sub-SaharanAfricancountriesgrewatlowratesordeclined.
d.
alloftheabove.
2.Worldgrowthdatarevealsthatfrom1960to2000:
a.
theUSandotherOECDcountriesgrewatmoderaterates.
c.
somecountriesparticularlyEastAsiancountriesgrewalowratesordeclined.
b.
sub-SaharanAfricancountriesgrewrapidly.
d.
alloftheabove.
3.Worldgrowthdatarevealsthatfrom1960to2000:
a.
theUSandotherOECDcountriesstagnated.
c.
somecountriesparticularlyEastAsiancountriesgrewatlowornegativerates.
b.
sub-SaharanAfricancountriesgrewatlowornegativerates.
d.
alloftheabove.
4.Worldgrowthdatarevealsthatfrom1960to2000:
a.
allcountriesgrewatsimilarrates.
c.
somecountriesparticularlyEastAsiancountriesgrewrapidly.
b.
sub-SaharanAfricancountriesgrewmoderately.
d.
theUSandotherOECDcountriesstagnated.
5.TheUSandotherOECDcountrieshadhighlevelsofGDPperpersonin2000despitegrowingatamoderateratefrom1960to2000because:
a.
ofexploitationofforeigncountries.
c.
theystolethewealthoflessdevelopedcountries.
b.
theireconomieshadgrownatamoderaterateforacenturyormore.
d.
alloftheabove.
6.IfAintheproductionfunctionY=A•F(K,L)rises,then:
a.
outputrisesforanylevelofKandL.
c.
themarginalproductofcapitalrises.
b.
themarginalproductoflaborrises.
d.
alloftheabove.
7.AintheproductionfunctionY=A•F(K,L)is:
a.
themarginalproductoflabor.
c.
themarginalproductofcapital.
b.
thecapitaltolaborratio(K/L).
d.
theleveloftechnology.
8.Themarginalproductoflaboris:
a.
howmuchoutputrisesforwhenlaborincreasesoneunit.
c.
labordividedbycapital(L/K)
b.
capitaldividedbylabor(K/L).
d.
theleveloftechnology.
9.Themarginalproductofcapitalis:
a.
.
c.
theslopeoftheproductionwhentechnologyandlaborareheldconstant.
b.
thechangeinoutputforaunitchangeincapital.
d.
alloftheabove.
10.Diminishingmarginalproductofcapital(MPK)means:
a.
outputrisesascapitalrises.
c.
outputrisesastheMPKrises.
b.
theMPKeventuallyfallsascapitalrises.
d.
themarginalproductofcapitaleventuallybecomesnegativeascapitalrises.
11.IntheproductionfunctionY=A•F(K,L),Lis:
a.
leisure.
c.
themarginalproductoflabor.
b.
labor.
d.
themarginalproductofleisure.
12.IntheproductionfunctionY=A•F(K,L),Yis:
a.
goodY.
c.
themarginalproductofgoodY.
b.
production.
d.
constantreturnstoscale.
13.AmongtheassumptionsmadeabouttheproductionfunctionY=A•(K,L)is:
a.
diminishingmarginalproductoflabor.
c.
diminishingmarginalproductofcapital.
b.
constantreturnstoscale.
d.
alloftheabove.
14.FortheproductionfunctionY=A•F(K,L)constantreturnstoscalemeans:
a.
ifcapitalandlabordoubleoutputdoubles.
c.
themarginalproductsofcapitalandlaborareconstant.
b.
capitalandlaborincreaseataconstantrate.
d.
technologyisconstant.
15.IftheproductionfunctionY=A•(K,L)isdividedbyL,then
a.
(Y/L)=A•f(K/L).
c.
y=A•f(k).
b.
outputpercapitaequalstechnologytimesafunctionofthecapitallaborratio.
d.
alloftheabove.
16.Amongthecategoriesthegrowthrateisbrokendownintobygrowthaccountingis:
a.
thegrowthrateoftechnology.
c.
thecapitallaborratio.
b.
themarginalproductofcapital.
d.
alloftheabove.
17.GrowthaccountingshowsthatGDPgrowthdependson:
a.
growthofthecapitalstock.
c.
governmentpurchases.
b.
holdingenvironmentalpollutionincheck.
d.
havingareasonabledistributionofincome.
18.Growthaccountingshowsthateconomicgrowthdependson:
a.
governmenttaxreceipts.
c.
loweringenvironmentalpollution.
b.
thegrowthofthelaborforce.
d.
alloftheabove.
19.Growthaccountingshowsthateconomicgrowthdependson:
a.
controllingenvironmentalpollution.
c.
increasesintechnology.
b.
internationalcooperation.
d.
alloftheabove.
20.Growthaccountingshowsthateconomicgrowthdependson:
a.
increasesintechnology.
c.
growthinthecapitalstock.
b.
thegrowthofthelaborforce.
d.
alloftheabove.
21.Thegrowthaccountingformulais:
a.
c.
b.
d.
Y=A•F(K,L)
22.Thelaborforceparticipationrateis:
a.
thelaborforcedividedintopopulation.
c.
thelaborforcetimespopulation.
b.
thelaborforcedividebypopulation.
d.
thelaborpopulationminusthelaborforce.
23.Ifacountryhasapopulationof100millionandalaborforceof60million,thenitslaborforceparticipationrateis:
a.
0.6.
c.
40million.
b.
1.67
d.
60million.
24.Ifacountryhasapopulationof300millionandalaborforceof200million,thenitslaborforceparticipationrateis:
a.
0.67
c.
100million.
b.
1.5
d.
200million.
25.Thechangeinthecapitalstockinaneconomydependson:
a.
theeconomy’ssaving.
c.
theeconomy’sinvestment.
b.
thechangeinbondprices.
d.
alloftheabove.
26.Inaclosedeconomywithnogovernmentsector,thechangeinthecapitalstockis:
a.
netinvestmentlessdepreciation.
c.
grossinvestment.
b.
grossinvestmentlessdepreciation.
d.
nominalsaving.
27.Inaclosedeconomywithnogovernmentsector,thechangeinthecapitalstockisequalto:
a.
netinvestmentlessdepreciation.
c.
grossinvestment.
b.
nominalsaving.
d.
realsaving.
28.Depreciationofthecapitalstockoccursdueto:
a.
machinesdeteriorating.
c.
bondsfallinginvalue.
b.
realestaterisinginvalue.
d.
alloftheabove.
29.Depreciationofthecapitalstockoccursdueto:
a.
inflation.
c.
bondsfallinginvalue.
b.
buildingsneedingrepair.
d.
alloftheabove.
30.Depreciationofthecapitalstockoccursdueto:
a.
deflation.
c.
bondsfallinginvalue.
b.
vehiclesrequiringnewparts.
d.
alloftheabove.
31.Depreciationofthecapitalstockoccursdueto:
a.
machinesdeteriorating.
c.
buildingsneedingrepair.
b.
vehiclesneedingparts.
d.
alloftheabove.
32.Ifthereare120machinesinaneconomyandthedepreciationrateis5%peryear,then:
a.
depreciationis5machinesayear.
c.
depreciationis115machinesperyear.
b.
depreciationis6machinesayear.
d.
depreciationis114machinesperyear.
33.Ifthereare120machinesinaneconomyandthedepreciationrateis10%peryear,thennextyearthereare:
a.
10oftheoriginalmachinesleft.
c.
108oftheoriginalmachinesleft.
b.
12oftheoriginalmachinesleft.
d.
110oftheoriginalmachinesleft.
34.Theaverageproductofcapitalis:
a.
c.
.
b.
Y/K.
d.
.
Figure3.1
35.InFigure3.1theaverageproductofcapitalis:
a.
rising.
c.
falling.
b.
constant.
d.
unknown.
36.InFigure3.1themarginalproductofcapitalis:
a.
rising.
c.
constant.
b.
declining.
d.
unknown.
37.Figure3.1shows:
a.
aproductionfunctionwithlaborandtechnologyconstant.
c.
aproductionfunctionwithcapitalandtechnologyconstant.
b.
aproductionfunctionwithcapitalandlaborconstant.
d.
aproductionfunctionwithcapital,laborandtechnologyconstant.
38.InthesteadystateoftheSolowgrowthmodel:
a.
c.
b.
d.
39.IntheSolowgrowthmodeltheeconomyreachestheoptimalk*:
a.
immediately.
c.
randomly.
b.
overaperiodoftime.
d.
cyclically.
40.TheSolowgrowthmodelassumesunemploymentis:
a.
zero.
c.
rising.
b.
falling.
d.
constant.
41.TheSolowgrowthmodelignores:
a.
theinternationalsector.
c.
changesinlaborforceparticipation.
b.
theroleofgovernment.
d.
alloftheabove.
42.TheSolowgrowthmodelshowsthatthegrowthrateofrealGDPperworkerdependson:
a.
thesavingrate,s
c.
thedepreciationrate,
.
b.
thegrowthrateofthelaborforce,n.
d.
alloftheabove.
43.TheSolowgrowthmodelshowsthatthegrowthrateofrealGDPperworkerdependson:
a.
thesavingrate,s
c.
therateofinflation.
b.
governmentspending,G.
d.
alloftheabove.
44.TheSolowgrowthmodelshowsthatthegrowthrateofrealGDPperworkerdependson:
a.
therateofgrowthofthemoneysupply.
c.
rateofgrowthofgovernmentdebt.
b.
thegrowthrateofthelaborforce,n.
d.
alloftheabove.
45.TheSolowgrowthmodelshowsthatthegrowthrateofrealGDPperworkerdependson:
a.
therateofgrowthofthemoneysupply.
c.
thedepreciationrate,
.
b.
levelofoutputintheeconomy.
d.
alloftheabove.
46.IntheSolowgrowth
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