概率論期末試卷a及答案

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學(xué)院系班級學(xué)號姓名裝訂線揚(yáng)州大學(xué)試題紙揚(yáng)州大學(xué)試題紙(2009－2010學(xué)年第一學(xué)期)物理學(xué)院微電、電科、光科09級課程概率論與數(shù)理統(tǒng)計(jì)（A）卷題目一二三總分得分一、填空題（共一、填空題（共22分2分空）空）1設(shè)隨機(jī)事件互不相容，且，，則AB

23、3.0)(?AP6.0)(?BP?)(ABP.2已知連續(xù)型隨機(jī)變量的分布函數(shù)為，則常數(shù)301()(1)111xFxaxxx??????????????概率密度函數(shù).a?()fx?3.設(shè)隨機(jī)變量在上服從均勻分布則，.X(04)?)(XE()DX?4.設(shè)隨機(jī)變量X的概率密度函數(shù)為則1e0()0xxfx??????????其它()EX?，.()DX?5設(shè)隨機(jī)變量相互獨(dú)立，且，記XY~(100.5)Xb~(14)YN2ZXY??，則.()EZ?

24、()DZ?6設(shè)，，則利用切比雪夫不等式估計(jì)()EX??2()(0)DX???.???????5||XP7設(shè)總體，是從中抽取的一個樣本，??~01XN??1021XXX?X則的聯(lián)合概率密度函數(shù).??1021XXX???1210fxxx??概率論與數(shù)理統(tǒng)計(jì)A卷第1頁共6頁leadingcadresawarenessofrightinplacestudythepartyConstitutionpartyrulesseriesofspeeche

25、scanmakepropereffect.Partycadresto“two“l(fā)eadbyexampletoleadbyexamplewemustchangeourmindrecognizingthat“two“isimptant.FirstlearntheCommunistPartyConstitutionPartyruleslearninglearningseriesimptantspeechbyGeneralSecretaryca

26、nenhancethey.Withthe“thirdrevolution“theriseofrapidchangesinourlifearefeelingtheCommunistsshouldadheretothetheyofconfidencewillcontinuetolearnfromthevoicesofthetimesthetimesinturnwillhavenewrequirementsfleadingpartycadre

27、s.“Two“isthemostbasicmeaningofmembersallmasteringthecetheythemostadvancedweaponstheycomplementthespiritofcalcium.SecondlytheCommunistPartyConstitutionPartyruleslearninglearningseriesimptantspeechbyGeneralSecretarybeablet

28、ofirmlybuildtheideologicalfoundation.Undertheimpactofmultiplevaluesthe“two“istohelpcultivateindependentjudgmentinnumerousmiscellaneousmultipleconceptssothatthemajityconsensusofpartymemberstheimptantmagicweaponofthepartyw

29、iththeresonancefrequency.FinallytheConstitutionoftheCommunistPartypartyruleslearninglearningseriesimptantspeechcanstcrowdsGeneralSecretaryposition.Nowsomegrassrootswkinthe“theoldwaydidntwkhardwaycannotthenewapproachwould

30、not“phenomenonsometimesduetoamassofpartymemberscadresnotunderstingdoesnotmeet.Infactthemass“convincing““identity“Behindarelikelytobepartymembersleadingcadresthemselvesigningbeliefsheldresultinginlackofpersuasionsenseofid

31、entity.“Two“isinfactguaranteedpartycadreswkanimptantprerequisitefconvincingthemasses.Baconsaiditwell:“practicalmencanhleindividualmattersbutlookingatthewholeoperationgloballybutonlymancandotoknowledge.“Givingup“two“effec

32、tivemustfirstraiseawarenessofleadingcadresofpartymembersaspartymemberslearnrealresponsibility“toknow“to“music““good“changesinparallelwiththegrounddonotfgettoalsoanswertheantennadrawcatchesonmeteologywhichsitbetweenheaven

33、EarthwhichmeldstogetherthedreamsofpracticingCommunist.Memberscadresshouldin“twolearnado“inthebasedpostdocontributioninallmembersinthecarriedout“l(fā)earnConstitutionPartyruleslearnseriesspeechdoqualifiedmembers“l(fā)earningeduca

34、tionthisisfollowingpartyofmasslineeducationpracticeactivities“threestrictthreereal“topiceducationzhihoudeepeningpartyeducationofonceimptantpracticeispromoted“threestrictthreereal“topiceducationfrom“keyminity“toallmembers

35、expfromconcentratededucationtoregulareducationextendsofimptantinitiatives.Vastnumbersofpartymemberscadresinthecourseoftwoshouldbebasedontheiractualstrivingtobe“l(fā)earning““done“markers.Strengtheningtheeticalstudybelieffait

36、h.Theyisanactionguideonlytheeticalknowledgeinplacetounityactioncanconsciously.ConstitutionisthefundamentallawofthepartypartyrulesarepartymustfollowtheGeneralrules.StudyingimplementingthepartyConstitutionPartyrulesaseries

37、ofimptantspeechGeneralSecretaryisaguidetopersistingdevelopingsocialismwithChineseacteristicsisabasicwkofstrengtheningthepartysconstructionbutalsoeacheveryCommunistPartyMembersobligationssolemnresponsibility.Theseimptantc

38、ontentfeachpartymustknowwouldbelievewilldoboth.WeGeneralSecretaryofthepartyConstitutionaseriesofremarkswithholdgraspthereal“l(fā)earning“thatbasisbasedontheConstitutionspeaktoissueinaccdancewiththeserieschangedtheproblem.Sec

39、onddisciplinedinlinetobecomelawabidingmodel.Isnotnorules.Ifthereisnoirondisciplinepartymemberscadreswillbecomeamessitwillloseitsfightingstrengthvitalitypuritynaturallymuchlessadvanced.By“two“educationpartymemberscadresto

40、keepthe“bottomline“nottheme“redlines“consciouslypracticethe“threeSuns“consciouslyactaccdingtotheConstitutionpartyrulesremainsapoliticalfcetoperfmpartyoathatreeofitsownimage.Threeistheloyaldaretoplayplaytopartymembers.Lea

41、rningistheFoundationisthekeytodevelopmentisthegoal.“Two“mainobjectiveistoletthemajityoftheplaytotheexemplaryroleofpartymemberscadrespartyConstitutionpartyrulestoexamine.Tousenewcriteriatoguideourbehavi.Througheducationth

42、eidealconvictionkeepinmindthatmembershiplearnlearnlearngoplayavanguardexemplaryrolethecouragetoplayasalwaysmaintainthepioneerpioneeringenterprisingspiritconstantlyimproveourowncapacitylevelofserviceaccdingtopositionsmake

43、contributions.Heartschangeleadmestrict“beganintheknowknowasLukeSkywalker““two“activitiesbequalifiedpartymembersbothastartingpointendingpoint.PartycadresonlyopinionsFoundationConstitutionPartyrulesseriestobetteraddressout

44、sideinshape“two“thisisStateleadingbyexampletoleadbyexampletobequalifiedpartymembersintheprocessofdoingthedeepsolidhighermestringent.Jobswithnewskills.Tobeaqualifiedpartymembermostbasicelementisalwaysadvancedrequirementst

45、hemselvesusingtheirpowertopushfwardthecauseofthepartythepeoplethenation.Istotheleadingcadresofpartymembersfirstofallisbasedonthejobdothepeopleintheheart.Thereisnotasloganbutaimstobetterservethepeopletargetedefftstoincrea

46、sethecapacity7.設(shè)總體與相互獨(dú)立，且都服從正態(tài)分布XY??10，N是從總體中抽取的一個樣本，是從總體??91XX，，?X??91YY，，?中抽取的一個樣本，則統(tǒng)計(jì)量～.Y192219XXUYY??????.A??92?.B??82?.C??9t.D??8t8.設(shè)總體，是從該總體中抽取的一??20~?，NX??nXXX，，，?21個簡單隨機(jī)樣本，則下列表達(dá)式可以作為的無偏估計(jì)量的是2?_________.A????niiXn