概率論與數(shù)理統(tǒng)計(jì)理工類第四版吳贛昌主編課后習(xí)題答案第三章

1、leadingcadresawarenessofrightinplacestudythepartyConstitutionpartyrulesseriesofspeechescanmakepropereffect.Partycadresto“two“l(fā)eadbyexampletoleadbyexamplewemustchangeourmindrecognizingthat“two“isimptant.FirstlearntheCommu

2、nistPartyConstitutionPartyruleslearninglearningseriesimptantspeechbyGeneralSecretarycanenhancethey.Withthe“thirdrevolution“theriseofrapidchangesinourlifearefeelingtheCommunistsshouldadheretothetheyofconfidencewillcontinu

3、etolearnfromthevoicesofthetimesthetimesinturnwillhavenewrequirementsfleadingpartycadres.“Two“isthemostbasicmeaningofmembersallmasteringthecetheythemostadvancedweaponstheycomplementthespiritofcalcium.SecondlytheCommunistP

4、artyConstitutionPartyruleslearninglearningseriesimptantspeechbyGeneralSecretarybeabletofirmlybuildtheideologicalfoundation.Undertheimpactofmultiplevaluesthe“two“istohelpcultivateindependentjudgmentinnumerousmiscellaneous

5、multipleconceptssothatthemajityconsensusofpartymemberstheimptantmagicweaponofthepartywiththeresonancefrequency.FinallytheConstitutionoftheCommunistPartypartyruleslearninglearningseriesimptantspeechcanstcrowdsGeneralSecre

6、taryposition.Nowsomegrassrootswkinthe“theoldwaydidntwkhardwaycannotthenewapproachwouldnot“phenomenonsometimesduetoamassofpartymemberscadresnotunderstingdoesnotmeet.Infactthemass“convincing““identity“Behindarelikelytobepa

7、rtymembersleadingcadresthemselvesigningbeliefsheldresultinginlackofpersuasionsenseofidentity.“Two“isinfactguaranteedpartycadreswkanimptantprerequisitefconvincingthemasses.Baconsaiditwell:“practicalmencanhleindividualmatt

8、ersbutlookingatthewholeoperationgloballybutonlymancandotoknowledge.“Givingup“two“effectivemustfirstraiseawarenessofleadingcadresofpartymembersaspartymemberslearnrealresponsibility“toknow“to“music““good“changesinparallelw

9、iththegrounddonotfgettoalsoanswertheantennadrawcatchesonmeteologywhichsitbetweenheavenEarthwhichmeldstogetherthedreamsofpracticingCommunist.Memberscadresshouldin“twolearnado“inthebasedpostdocontributioninallmembersinthec

10、arriedout“l(fā)earnConstitutionPartyruleslearnseriesspeechdoqualifiedmembers“l(fā)earningeducationthisisfollowingpartyofmasslineeducationpracticeactivities“threestrictthreereal“topiceducationzhihoudeepeningpartyeducationofonceim

11、ptantpracticeispromoted“threestrictthreereal“topiceducationfrom“keyminity“toallmembersexpfromconcentratededucationtoregulareducationextendsofimptantinitiatives.Vastnumbersofpartymemberscadresinthecourseoftwoshouldbebased

12、ontheiractualstrivingtobe“l(fā)earning““done“markers.Strengtheningtheeticalstudybelieffaith.Theyisanactionguideonlytheeticalknowledgeinplacetounityactioncanconsciously.Constitutionisthefundamentallawofthepartypartyrulesarepa

13、rtymustfollowtheGeneralrules.StudyingimplementingthepartyConstitutionPartyrulesaseriesofimptantspeechGeneralSecretaryisaguidetopersistingdevelopingsocialismwithChineseacteristicsisabasicwkofstrengtheningthepartysconstruc

14、tionbutalsoeacheveryCommunistPartyMembersobligationssolemnresponsibility.Theseimptantcontentfeachpartymustknowwouldbelievewilldoboth.WeGeneralSecretaryofthepartyConstitutionaseriesofremarkswithholdgraspthereal“l(fā)earning“t

15、hatbasisbasedontheConstitutionspeaktoissueinaccdancewiththeserieschangedtheproblem.Seconddisciplinedinlinetobecomelawabidingmodel.Isnotnorules.Ifthereisnoirondisciplinepartymemberscadreswillbecomeamessitwillloseitsfighti

16、ngstrengthvitalitypuritynaturallymuchlessadvanced.By“two“educationpartymemberscadrestokeepthe“bottomline“nottheme“redlines“consciouslypracticethe“threeSuns“consciouslyactaccdingtotheConstitutionpartyrulesremainsapolitica

17、lfcetoperfmpartyoathatreeofitsownimage.Threeistheloyaldaretoplayplaytopartymembers.LearningistheFoundationisthekeytodevelopmentisthegoal.“Two“mainobjectiveistoletthemajityoftheplaytotheexemplaryroleofpartymemberscadrespa

18、rtyConstitutionpartyrulestoexamine.Tousenewcriteriatoguideourbehavi.Througheducationtheidealconvictionkeepinmindthatmembershiplearnlearnlearngoplayavanguardexemplaryrolethecouragetoplayasalwaysmaintainthepioneerpioneerin

19、genterprisingspiritconstantlyimproveourowncapacitylevelofserviceaccdingtopositionsmakecontributions.Heartschangeleadmestrict“beganintheknowknowasLukeSkywalker““two“activitiesbequalifiedpartymembersbothastartingpointendin

20、gpoint.PartycadresonlyopinionsFoundationConstitutionPartyrulesseriestobetteraddressoutsideinshape“two“thisisStateleadingbyexampletoleadbyexampletobequalifiedpartymembersintheprocessofdoingthedeepsolidhighermestringent.Jo

21、bswithnewskills.Tobeaqualifiedpartymembermostbasicelementisalwaysadvancedrequirementsthemselvesusingtheirpowertopushfwardthecauseofthepartythepeoplethenation.Istotheleadingcadresofpartymembersfirstofallisbasedonthejobdot

22、hepeopleintheheart.Thereisnotasloganbutaimstobetterservethepeopletargetedefftstoincreasethecapacity第三章第三章多維隨機(jī)變量及其分布多維隨機(jī)變量及其分布3.1二維隨機(jī)變量及其分布二維隨機(jī)變量及其分布習(xí)題習(xí)題1設(shè)(XY)的分布律為求a.解答：解答：由分布律性質(zhì)可知解得a=1ijijp??111111691839a??????29習(xí)題習(xí)題2(1

23、)2.??????XYFxyFxy設(shè)的分布函數(shù)為，試用表示：(1)PaaY≤b.解答：解答：PXaY≤b=F(∞b)F(ab).習(xí)題習(xí)題3(1)設(shè)二維離散型隨機(jī)變量的聯(lián)合分布如下表：試求：(1)P12Y=1，且由正態(tài)分布圖形的對(duì)稱性，知PX≤Y=PXY故PX≤Y=12.leadingcadresawarenessofrightinplacestudythepartyConstitutionpartyrulesseriesofspeech

24、escanmakepropereffect.Partycadresto“two“l(fā)eadbyexampletoleadbyexamplewemustchangeourmindrecognizingthat“two“isimptant.FirstlearntheCommunistPartyConstitutionPartyruleslearninglearningseriesimptantspeechbyGeneralSecretaryc

25、anenhancethey.Withthe“thirdrevolution“theriseofrapidchangesinourlifearefeelingtheCommunistsshouldadheretothetheyofconfidencewillcontinuetolearnfromthevoicesofthetimesthetimesinturnwillhavenewrequirementsfleadingpartycadr

26、es.“Two“isthemostbasicmeaningofmembersallmasteringthecetheythemostadvancedweaponstheycomplementthespiritofcalcium.SecondlytheCommunistPartyConstitutionPartyruleslearninglearningseriesimptantspeechbyGeneralSecretarybeable

27、tofirmlybuildtheideologicalfoundation.Undertheimpactofmultiplevaluesthe“two“istohelpcultivateindependentjudgmentinnumerousmiscellaneousmultipleconceptssothatthemajityconsensusofpartymemberstheimptantmagicweaponoftheparty

28、withtheresonancefrequency.FinallytheConstitutionoftheCommunistPartypartyruleslearninglearningseriesimptantspeechcanstcrowdsGeneralSecretaryposition.Nowsomegrassrootswkinthe“theoldwaydidntwkhardwaycannotthenewapproachwoul

29、dnot“phenomenonsometimesduetoamassofpartymemberscadresnotunderstingdoesnotmeet.Infactthemass“convincing““identity“Behindarelikelytobepartymembersleadingcadresthemselvesigningbeliefsheldresultinginlackofpersuasionsenseofi

30、dentity.“Two“isinfactguaranteedpartycadreswkanimptantprerequisitefconvincingthemasses.Baconsaiditwell:“practicalmencanhleindividualmattersbutlookingatthewholeoperationgloballybutonlymancandotoknowledge.“Givingup“two“effe

31、ctivemustfirstraiseawarenessofleadingcadresofpartymembersaspartymemberslearnrealresponsibility“toknow“to“music““good“changesinparallelwiththegrounddonotfgettoalsoanswertheantennadrawcatchesonmeteologywhichsitbetweenheave

32、nEarthwhichmeldstogetherthedreamsofpracticingCommunist.Memberscadresshouldin“twolearnado“inthebasedpostdocontributioninallmembersinthecarriedout“l(fā)earnConstitutionPartyruleslearnseriesspeechdoqualifiedmembers“l(fā)earningeduc

33、ationthisisfollowingpartyofmasslineeducationpracticeactivities“threestrictthreereal“topiceducationzhihoudeepeningpartyeducationofonceimptantpracticeispromoted“threestrictthreereal“topiceducationfrom“keyminity“toallmember

34、sexpfromconcentratededucationtoregulareducationextendsofimptantinitiatives.Vastnumbersofpartymemberscadresinthecourseoftwoshouldbebasedontheiractualstrivingtobe“l(fā)earning““done“markers.Strengtheningtheeticalstudybelieffai

35、th.Theyisanactionguideonlytheeticalknowledgeinplacetounityactioncanconsciously.ConstitutionisthefundamentallawofthepartypartyrulesarepartymustfollowtheGeneralrules.StudyingimplementingthepartyConstitutionPartyrulesaserie

36、sofimptantspeechGeneralSecretaryisaguidetopersistingdevelopingsocialismwithChineseacteristicsisabasicwkofstrengtheningthepartysconstructionbutalsoeacheveryCommunistPartyMembersobligationssolemnresponsibility.Theseimptant

37、contentfeachpartymustknowwouldbelievewilldoboth.WeGeneralSecretaryofthepartyConstitutionaseriesofremarkswithholdgraspthereal“l(fā)earning“thatbasisbasedontheConstitutionspeaktoissueinaccdancewiththeserieschangedtheproblem.Se

38、conddisciplinedinlinetobecomelawabidingmodel.Isnotnorules.Ifthereisnoirondisciplinepartymemberscadreswillbecomeamessitwillloseitsfightingstrengthvitalitypuritynaturallymuchlessadvanced.By“two“educationpartymemberscadrest

39、okeepthe“bottomline“nottheme“redlines“consciouslypracticethe“threeSuns“consciouslyactaccdingtotheConstitutionpartyrulesremainsapoliticalfcetoperfmpartyoathatreeofitsownimage.Threeistheloyaldaretoplayplaytopartymembers.Le

40、arningistheFoundationisthekeytodevelopmentisthegoal.“Two“mainobjectiveistoletthemajityoftheplaytotheexemplaryroleofpartymemberscadrespartyConstitutionpartyrulestoexamine.Tousenewcriteriatoguideourbehavi.Througheducationt

41、heidealconvictionkeepinmindthatmembershiplearnlearnlearngoplayavanguardexemplaryrolethecouragetoplayasalwaysmaintainthepioneerpioneeringenterprisingspiritconstantlyimproveourowncapacitylevelofserviceaccdingtopositionsmak

42、econtributions.Heartschangeleadmestrict“beganintheknowknowasLukeSkywalker““two“activitiesbequalifiedpartymembersbothastartingpointendingpoint.PartycadresonlyopinionsFoundationConstitutionPartyrulesseriestobetteraddressou

43、tsideinshape“two“thisisStateleadingbyexampletoleadbyexampletobequalifiedpartymembersintheprocessofdoingthedeepsolidhighermestringent.Jobswithnewskills.Tobeaqualifiedpartymembermostbasicelementisalwaysadvancedrequirements

44、themselvesusingtheirpowertopushfwardthecauseofthepartythepeoplethenation.Istotheleadingcadresofpartymembersfirstofallisbasedonthejobdothepeopleintheheart.Thereisnotasloganbutaimstobetterservethepeopletargetedefftstoincre

45、asethecapacity3習(xí)題習(xí)題10設(shè)(XY)在曲線y=x所圍成的區(qū)域G里服從均勻分布，求聯(lián)合分布密度和邊緣分布密2yx?度.解答：解答：區(qū)域G的面積由題設(shè)知(XY)的聯(lián)合分布密度為120()16Axxdx??????fxy?260x1xyxO????其它從而22()()66()01xXxfxfxydyxxx????????????即()Xfx?26()0x1xxO???其它()()66()01yYyfyfxyxdxyyy????

46、????????即()Yfy?6()01yyyO???其它3.2條件分布與隨機(jī)變量的獨(dú)立性條件分布與隨機(jī)變量的獨(dú)立性習(xí)題習(xí)題1二維隨機(jī)變量(XY)的分布律為(1)求Y的邊緣分布律；(2)求PY=0∣X=0PY=1∣X=0(3)判定X與Y是否獨(dú)立？解答：解答：(1)由(XY)的分布律知，Y只取0及1兩個(gè)值.PY=0=PX=0Y=0PX=1Y=0=715730=0.7PY=1=107110.33015iPXiY???????(2)Py=0∣

47、x=0=Px=0y=0Px=0=23Py=1∣x=0=13.(3)已知Px=0y=0=715由(1)知Py=0=0.7類似可得Px=0=0.7.因?yàn)镻x=0y=0≠Px=0?Py=0所以x與y不獨(dú)立.習(xí)題習(xí)題2將某一醫(yī)藥公司9月份和8份的青霉素針劑的訂貨單分別記為X與Y.據(jù)以往積累的資料知X和Y的聯(lián)合分布律為(1)求邊緣分布律(2)求8月份的訂單數(shù)為51時(shí)，9月份訂單數(shù)的條件分布律.解答：解答：(1)邊緣分布律為Xpk0.180.150