微觀經濟學（四川大學）智慧樹知到期末考試答案2024年

微觀經濟學（四川大學）智慧樹知到期末考試答案2024年微觀經濟學（四川大學）Monopolisticcompetitionandperfectcompetitiondifferbecause

A:onlycompetitivefirmstakethepriceasgiven.B:onlymonopolisticcompetitionallowsforentryofotherfirmsinthelongrun.C:onlymonopolisticallycompetitivefirmswillsetMR=MC.D:onlyperfectlycompetitivefirmswillsetMR=MC.答案:onlycompetitivefirmstakethepriceasgivenInthelate1980s,thehealthbenefitsofoatbranwerewidelyadvertised.Ifthepriceofoatsincreased50%,causingthequantityofoatssuppliedtoincreaseby40%,thenthepriceelasticityofsupplywas

A:-1.25.B:-0.80.C:0.80.D:1.25.答案:0.80AmovementupwardalonganupwardslopingEngelcurvecorrespondsto

A:crossingindifferencecurves.B:arotationinthebudgetconstraint.C:upwardslopingindifferencecurves.D:aparallelshiftinthebudgetconstraint.答案:aparallelshiftinthebudgetconstraintBothSallyandSamreceivea10%raiseinasingleyear.SallyincreasesherdemandforgroundbeefwhereasSamdecreaseshisdemandforgroundbeef.

A:Thisisimpossible.B:ThisisonlypossibleifSallyhaslowerincomethanSam.C:ThisisonlypossibleifSallyconsidersgroundbeefanormalgoodandSamviewsitasaninferiorgood.D:ThisisonlypossibleifSallyconsidersgroundbeefaninferiorgood,andSamviewsitasanormalgood.答案:ThisisonlypossibleifSallyconsidersgroundbeefanormalgoodandSamviewsitasaninferiorgoodPeter'sincomeincreasesandsodoeshisconsumptionofbothmoviesandpop,buthisconsumptionofpopincreasesbylessthanhisconsumptionofmoviesincreases.WhichoneofthefollowingstatementsistrueforPeter?

A:Amovieisaninferiorgood;popisaninferiorgood.B:Amovieisaninferiorgood;popisanormalgood.C:Amovieisanormalgood;popisaninferiorgood.D:Amovieisanormalgood;wecannottellwhetherpopisanormalgoodoraninferiorgood.E:Moviesandpoparebothnormalgoods.答案:MoviesandpoparebothnormalgoodsUtilityisthesetofnumericalvaluesthat

A:describeshowmuchmoreaconsumerprefersonebundletoanother.B:yieldsanabsolutelevelofpleasurefromabundleofgoods.C:yieldsacardinalrankingofbundles.D:reflectstherelativerankingofvariousbundlesofgoods.答案:reflectstherelativerankingofvariousbundlesofgoodsAssumebaseballplayersalariesarefullydeterminedbeforetheseasonstarts.Fromthepointofviewofthebaseballteamowner,playersalariesduringthecourseoftheseasonarethen

A:averagecosts.B:variablecosts.C:fixedcosts.D:marginalcosts.答案:fixedcostsSupposeMPL=0.5?(q/L)andMPK=0.5?(q/K).Inthelongrun,thefirmwillhireequalamountsofcapitalandlabor

A:atnopointintime.B:onlywhenw=r.C:onlywhenw=0.5?r.D:allofthetime.答案:onlywhenw=rSupposeamonopoly'sinversedemandcurveisP=100-Q,itproducesaproductwithaconstantmarginalcostof20,andithasnofixedcosts.Comparedtotheconsumersurplusifthemarketwereperfectlycompetitive,consumersurplusishowmuchlesswhenthemonopolistpracticesperfectpricediscrimination?

A:800B:1600C:0D:3200答案:3200Ifconsumersareidentical,then

A:pricediscriminationisimpossible.B:pricediscriminationcanoccurifeachconsumerhasadownward-slopingdemandcurvefortheproductC:perfectpricediscriminationistheonlyformofpricediscriminationthatcanincreaseamonopoly'sprofit.D:tie-insalescannotincreaseamonopoly'sprofit.答案:pricediscriminationcanoccurifeachconsumerhasadownward-slopingdemandcurvefortheproductReturnstoscalereferstothechangeinoutputwhen

A:capitalequipmentisdoubled.B:allinputsincreaseproportionately.C:specializationimproves.D:laborincreasesholdingallotherinputsfixed.答案:allinputsincreaseproportionatelyThesteeperthelaborsupplycurve,

A:thelowerthewagethemonopsonistpays.B:thehigherthewagethemonopsonistpays.C:thebetteroffworkersare.D:thesmallerthedifferencebetweenthewageandthemarginalexpenditureonlabor.答案:thelowerthewagethemonopsonistpays.Whenthepriceofagoodchanges,thesubstitutioneffectcanbefoundbycomparingtheequilibriumquantitiespurchased

A:onthenewbudgetlineandahypotheticalbudgetlinethatisashiftbacktotheoriginalindifferencecurveparalleltothenewbudgetline.B:onthenewindifferencecurve.C:ontheoriginalindifferencecurvewhenfacedwiththeoriginalpricesandwhenfacedwiththenewprices.D:ontheoldbudgetlineandthenewbudgetline.答案:ontheoriginalindifferencecurvewhenfacedwiththeoriginalpricesandwhenfacedwiththenewpricesIfbothpricesdecreasesby50%,

A:slopeofthebudgetconstraintwillincrease.B:budgetconstraintwillbeunchanged.C:slopeofthebudgetconstraintwilldecrease.D:budgetconstraintwillshiftoutwardinaparallelfashion.答案:budgetconstraintwillshiftoutwardinaparallelfashion.Thelaborsupplycurveforamonopsonyis

A:perfectlyvertical.B:downwardsloping.C:upwardslopingbutnotperfectlyvertical.D:perfectlyhorizontal.答案:upwardslopingbutnotperfectlyvertical.Atechnologicalimprovementisrepresentedby

A:apointinsidetheproductionpossibilitiesfrontier.B:amovementalongtheproductionpossibilitiesfrontier.C:amovementfromapointinsidetheproductionpossibilitiesfrontiertoapointontheproductionpossibilitiesfrontier.D:anoutwardshiftoftheproductionpossibilitiesfrontier.E:apointoutsidetheproductionpossibilitiesfrontier.答案:anoutwardshiftoftheproductionpossibilitiesfrontierQuotas,suchaslimitingtheamountofresidentialwateruseduringadrought,restrictsanindividual'spreferencesetand

A:increasesutilitybecausequotasrestrictoutputandraiseprofitsforthewatercompany.B:reducesutilitybecauseanindividualcannotconsumeasmuchastheywouldwithoutthequota.C:reducesutilitybecauseanindividualisforcedtosubstitutetoothergoods.D:doesnotaffectoverallutility.答案:reducesutilitybecauseanindividualcannotconsumeasmuchastheywouldwithoutthequotaAmonopsonistfacesanupward-slopinglaborsupplycurve.Thismeansthathismarginalexpendituresonlaborare

A:greaterthanthewage.B:equaltothewageplustheincreaseinthewageresultingfromhiringonemoreunitoflaborhired.C:Alloftheabove.D:greaterthanthewagebecausehiringmoreworkersrequirestopayallworkersmore.答案:AlloftheaboveSupposeamonopolisticallycompetitiveindustryevolvedintoaperfectlycompetitiveindustry.Whichofthefollowingstatementsiscorrect?

A:Theindustrywouldproduceatdecreasingreturnstoscale.B:Elasticityofdemandforthefirm'sproductwouldremainthesameafterthischangeoccurredC:Thisindustrywouldproducethesamelevelofoutputatlowerpricesinthelongrunthanbeforethechange.D:Theindustrywouldproducemoreoutputandchargealowerpriceafterthechange.答案:TheindustrywouldproducemoreoutputandchargealowerpriceafterthechangeAccordingtotheLawofDemand,thedemandcurveforagoodwill

A:slopedownward.B:slopeupward.C:shiftleftwardwhenthepriceofthegoodincreases.D:shiftrightwardwhenthepriceofthegoodincreases.答案:slopedownwardAperfect-price-discriminatingmonopoly'smarginalrevenuecurve

A:isthedemandcurve.B:variesforeachconsumer.C:isthesameasthemonopolist'smarginalrevenuecurve.D:liesbelowthedemandcurve.答案:isthedemandcurveEconomiccostsofaninputinclude

A:onlyexplicitcosts.B:onlyimplicitcosts.C:whatevermanagementwishestoreporttotheshareholders.D:bothimplicitandexplicitcosts.答案:bothimplicitandexplicitcostsSupposetheshort-runproductionfunctionisq=10?L.Ifthewagerateis$10perunitoflabor,thenMCequals

A:q/10.B:10/q.C:q.D:1答案:1Theslopeofanisoquanttellsus

A:howmuchoutputincreaseswhenbothinputsareincreased.B:thedecreaseincapitalnecessarytokeepMPLconstantwhenlaborincreasesbyoneunit.C:theincreaseinMPLwhencapitalincreases.D:thedecreaseincapitalnecessarytokeepoutputconstantwhenlaborincreasesbyoneunit.答案:thedecreaseincapitalnecessarytokeepoutputconstantwhenlaborincreasesbyoneunitTheslopeofthetotalproductcurvealwaysequals

A:thechangeininputdividedbythechangeinoutput.B:theratioofthemarginalproductandtheaverageproduct.C:themarginalproductoftheinput.D:theaverageproductoftheinput.答案:themarginalproductoftheinputWhatismarginalutility?

A:thechangeinthepriceofagooddividedbythechangeintotalutilityB:theadditionalsatisfactionreceivedfromconsumingonemoreunitofagoodC:thechangeintotalutilitydividedbythepriceofagoodD:thetotalsatisfactionreceivedfromconsumingasmuchofthegoodthatisavailableforconsumptionE:themaximumamountofsatisfactionfromconsumingagood答案:theadditionalsatisfactionreceivedfromconsumingonemoreunitofagoodWhatareplayers’strategies?

A:player1’sstrategiesare:aa,ab,ba,bb;player2’sstrategiesarex,yB:player1’sstrategiesare:aa,ab,ba,bb;player2’sstrategiesarexx,xy,yx,yyC:player1’sstrategiesare:a,b;player2’sstrategiesarex,yD:Player1’sstrategiesare:a,b;player2’sstrategiesarexx,xy,yx,yy答案:player1’sstrategiesare:aa,ab,ba,bb;player2’sstrategiesarex,yReturnstoscaleisaconceptthatoperates

A:inboththelongrunandtheshortrun.B:ineitherthelongrunortheshortrunbutneverboth.C:onlyintheshortrun.D:onlyinthelongrun.答案:onlyinthelongrunIfafirmtakesthewageasgiven,thenthesupplycurveoflabortothatfirmis

A:vertical.B:downwardsloping.C:upwardsloping.D:horizontal.答案:horizontalWhenreducingoutputfromthecompetitivelevellowerswelfare,

A:socialwelfareishigherB:producersurplusislowerC:adeadweightlossisgeneratedD:consumersurplusislower答案:adeadweightlossisgenerated###consumersurplusislowerAcompetitivemarketmaximizessocialwelfarebecauseinacompetitivemarket,priceequalsmarginalcostofthelastunitproduced.

A:錯B:對答案:對Theabilitytosetapricegreaterthanmarginalcostguaranteesaneconomicprofitforthemonopolisticcompetitor.

A:錯B:對答案:錯Inperfectcompetion,themarginalcostcurvealwayscrossthelowestpointonaveragevariablecostcurve

A:對B:錯答案:對Thelengthoftheshortrunisthesameforallfirms.

A:對B:錯答案:錯(First-pricesealed-bidauction)Aliceissellingher2000chevroletcavaliertoherfriends,BobandCharles.BobattachesavalueofS$8,000toAlice'soldcar,whileCharles'svalueofthecarisS$10,000.(ThesevaluationsarecommonknowledgebetweenBobandCharles.)Alicedesignsthefollowingauctiontosellhercar:First,sheaskseachofthemtowritehisbidonapieceofpaper.ThenBobandCharlesgivetheirbids(nonnegativeintegers)toAlice.NoticethatwhenBobandCharleswritedowntheirbids,theydon'tknoweachother'sbid(socalled"sealedbid").AfterAlicereceivesthesealedbids,thebidsareshowntoeveryone,andthecarwillbesoldtothepersonwhohasthehigherbidatthepriceequaltohisownbid.Whenthereisatie(BobandCharlesbidthesameamount),thenAlicewouldflipafaircointodecidewhowillgetthecar.Bobbids9999andCharlesbids10000isaNashequilibrium.

A:錯B:對答案:錯Amonopolyalwaysoperatesintheinelasticportionofitsdemandcurve

A:錯誤B:正確答案:錯誤(First-pricesealed-bidauction)Aliceissellingher2000chevroletcavaliertoherfriends,BobandCharles.BobattachesavalueofS$8,000toAlice'soldcar,whileCharles'svalueofthecarisS$10,000.(ThesevaluationsarecommonknowledgebetweenBobandCharles.)Alicedesignsthefollowingauctiontosellhercar:First,sheaskseachofthemtowritehisbidonapieceofpaper.ThenBobandCharlesgivetheirbids(nonnegativeintegers)toAlice.NoticethatwhenBobandCharleswritedowntheirbids,theydon'tknoweachother'sbid(socalled"sealedbid").AfterAlicereceivesthesealedbids,thebidsareshowntoeveryone,andthecarwillbesoldtothepersonwhohasthehigherbidatthepriceequaltohisownbid.Whenthereisatie(BobandCharlesbidthesameamount),thenAlicewouldflipafaircointodecidewhowillgetthecar.InthisgameBobbids8500andCharlesbids8501isaNashequilibrium?

A:對B:錯答案:錯Manycollegefootballteamsrequirea"donation"inordertopurchaseseasontickets.Thisispricegrouping.

A:錯B:對答案:錯Amonopolistcanalways