最全APomni_xyz最全APomni_xyzObtainedObtainedfromopen.773.im/CommercialUse APAP?PracticeThequestionscontainedinthisThequestionscontainedinthisAP?StatisticsPracticeExamarewrittentothecontentspecificationsofAPExamsforthissubject.TakingthispracticeexamshouldprovidestudentswithanideaoftheirgeneralareasofstrengthsandweaknessesinpreparingfortheactualAPExam.BecausethisAPStatisticsPracticeExamhasneverbeenadministeredasanoperationalAPExam,statisticaldataarenotavailableforcalculatingpotentialrawscoresorconversionsintoAPgrades.ThisAPStatisticsPracticeExamisprovidedbytheCollegeBoardforAPExampreparation.Teachersarepermittedtodownloadthematerialsandmakecopiestousewiththeirstudentsinaclassroomsettingonly.Tomaintainthesecurityofthisexam,teachersshouldcollectallmaterialsaftertheiradministrationandkeeptheminasecurelocation.Teachersmaynotredistributethefileselectronicallyforanyreason.0a8TheCollegeBoard.AllrightsrCollegeBoard,AdvancedPementProgram,AP,APCentral,andtheacornlogoareregisteredtrademarksoftheCollegeBoard.PSAT/NMSQTisaregisteredtrade-oftheCollegeBoardandNationalMeritScholarshipCorporation.Allotherproductsandservicesmaydemarksoftheirrespectiveowners.VisittheCollegeBoardontheWeb:.0a最全APo-ni_xyz最全APo-ni_xyzObtainedObtainedfromopen.773.im/CommercialUseDirectionsfor SectionI:Multiple-Choice Section -Response StudentAnswerSheetforMultiple-Choice Multiple-ChoiceAnswer -ResponseScoring TheCollegeBoard:ConnectingStudentstoCollegeTheCollegeBoardisanot-for-profitmembershipassociationwhosemissionistoconnectstudentstocollegesuccessandopportunity.Foundedin1900,theassociationiscomposedofmorethan5,000schools,colleges,universities,andothereducationalorganizations.Eachyear,theCollegeBoardservessevenmillionstudentsandtheirparents,23,000highschools,and3,500collegesthroughmajorprogramsandservicesincollegeadmissions,guidance,assessment,financialaid,enrollment,andteachingandlearning.Amongitsbest-knownprogramsaretheSAT?,thePSAT/NMSQT?,andtheAdvancedcementProgram?(AP?).TheCollegeBoardiscommittedtotheprinciplesofexcellenceandequity,andthatcommitmentisembodiedinallofitsprograms,services,activities,andconcerns.VisittheCollegeBoardonthe APCentralistheofficialonlinehomefortheAPProgram: 最全APii最全APii-Obtainedfromopen.773.imObtainedfromopen.773.im/CommercialUseTheAPStatisticsExamisthreehoursinlengthandconsistsofamultiple-choicesectionanda The90-minutemultiple-choicesectioncontains40questionsandaccountsfor50percentofthefinalThe90- -responsesectioncontains6questionsandaccountsfor50percentofthefinalA10-minutebreakshouldbeprovidedafterSectionIisTheactualAPExamisadministeredinonesession.Studentswillhavethemostrealisticexperienceifacompletemorningorafternoonisavailabletoadministerthispracticeexam.Ifascheduledoesnotpermitonetimeperiodfortheentirepracticeexamadministration,itwouldbeacceptabletoadministerSectionIonedayandSectionIIonasubsequentday.Totalscoresonthemultiple-choicesectionarebasedonlyonthenumberofquestionsansweredcorrectly.Nopointsaredeductedforincorrectanswersandnopointsareawardedforunansweredquestions.Theuseofapprovedcalculatorsispermittedduringtheexam.MoreinformationoncalculatorsthatareapprovedforuseonthisexamcanbefoundonAPCentral.ItissuggestedthatthepracticeexambecompletedusingapenciltosimulateanactualTeacherswillneedtoprovidepaperforthestudentstowritetheir-responseanswers.Teachersshouldprovidedirectionstothestudentsindicatinghowtheywishtheresponsestobelabeledsotheteacherwillbeabletoassociatethestudent’sresponsewiththequestionthestudentintendedtoanswer.Rememberthatstudentsarenotallowedtoremoveanymaterials,includingscratchwork,fromthetesting最全APo-PAGE最全APo-ni_xyz掃描左下ObtainedObtainedfromopen.773.im/CommercialUseSectionIMultiple-ChoiceQuestionsObtainedObtainedfromopen.773.im/CommercialUseFormulasbeginonpage3.Questionsbeginonpage6.Tablesbeginonpage42.Descriptive xi1n1ndxii2dndn11i21n1d2i22d11idnyb0b1dxd2b12

dxb0y1 FxixIFyiyxx

KH 1

d

Obtainedfromopen.773.imObtainedfromopen.773.im/CommercialUse1

dxidxii2P(A?B)=P(A)+P(B)-P(A?P(AB)

P(A?E(X)=

=?xiObtainedObtainedfromopen.773.im/CommercialUseVar(X)=s2=?(x-)2 IfXhasabinomialdistributionwithparametersnandp,áP(X=k)=ên?pk(1-p)á?x=Ifxisthemeanofarandomsampleofsizenfromaninfinitepopulationwithmeanandstandarddeviations,then:x=nx =nxInferentialStandardizedteststatistic: statistic- standarddeviationofConfidenceinterval:

±(criticalvalue)∑(standarddeviationofObtainedObtainedfromopen.773.im/CommercialUseSingle-StandardDeviationofStatisticSamplenSamplep(1p)Two-StandardDeviationofStatisticDifferenceofsample 1 Specialcasewhen1 n Differenceofsampleproportionsp1(1p1 p2(1p2 Specialcasewhenp1p2p1p11 Chi-squareteststatistic aGOONTOTHEGOONTOTHENEXT最全APo-ni_xyz掃描左下ObtainedfromObtainedfromopen.773.im/CommercialUseTime—1hourand30minutesNumberofquestions—40Percentoftotalgrade—50Directions:Solveeachofthefollowingproblems,usingtheavailablespaceforscratchwork.Selecttheanswerchoicethatisbestineachcaseandcetheletterofyourchoiceinthecorrespondingboxonthestudentanswersheet.Donotspendtoomuchtimeonanyoneproblem.Thedotplotbelowdisysthetotalnumberofthatthe28residentsofonestreetinacertaincommunitytraveledtoworkinonefive-dayworkweek.Whichofthefollowingisclosesttothepercentilerankofaresidentfromthisstreetwhotraveled85toworkthatweek?Obtainedfromopen.773.im/CommercialUseAlargesimplerandomsampleofpeopleagednineteentothirtylivinginthestateObtainedfromopen.773.im/CommercialUseOnlypeopleagednineteentothirtylivinginthestateofColoradowhowereinthisOnlypeopleagednineteentothirtylivinginthestateofAllpeoplelivinginthestateofOnlypeopleagednineteentothirtylivingintheUnitedAllpeoplelivingintheUnitedObtainedfromopen.773.im/CommercialUseJanellecollecteddataontheamountoftimeinminuteseachinalargeObtainedfromopen.773.im/CommercialUsealocalstore.Thedataalsoincludedrecordingthegenderofeachcustomer.Thesedatawereusedtogeneratetheboxplotsshownbelow.WhichofthefollowingstatementsisTherangeintheamountoftimeinminutesmalesinthesampleofcustomersspentinthestoreisapproximay40minutes.Themeanamountoftimeinminutesmalesinthesampleofcustomersspentinthestoreisapproximay20minutes.Thethirdquartileoftheamountoftimeinminutesmalesinthesampleofcustomersspentinthestoreisapproximay45minutes.Theinterquartilerangeoftheamountoftimeinminutesfemalesinthesampleofcustomersspentinthestoreis15minutes.Approximayhalfofthemalesinthesampleofcustomersspentatleastasmuchtimeinthestoreasanyfemaleinthesampleofcustomers.Theprobabilityofobtainingaheadwhenacertaincoinisflippedisabout0.65.Whichofthefollowingisclosesttotheprobabilitythatheadswouldbeobtained15orfewertimeswhenthiscoinisflipped25times?Astudywasconductedusingdatacollectedonthebirthweightsofarandomsampleof10pairsofidenticaltwinstodeterminewhetherthetwinbornfirsttendstoweighmorethanthetwinbornsecond.LetmFrepresenttheaveragebirthweightofalltwinsbornfirst,mSrepresenttheaveragebirthweightofalltwinsbornsecond,andmDrepresenttheaveragedifferenceinbirthweight(weightoffirstminusweightofsecond)forallpairsoftwins.Whichofthefollowingwouldbethenullandalternativehypothesesforthisstudy?

H0:

=mSandHa:

<

H0:H0:

=mSandHa:=0andHa:

π>ObtainedObtainedfromopen.773.im/CommercialUse

H0:H0:

=mDandHa:=mDandHa:

>πObtainedfromopen.773.im/CommercialUseThebuyerforanelectronicsstorewantstoestimatetheproportionofObtainedfromopen.773.im/CommercialUsecontaining25controllers.Thebuyernumberstheboxesfrom1to200andrandomlyselectssixnumbersinthatrange.Shethenopensthesixboxeswiththecorrespondingnumbers,examinesall25controllersineachoftheseboxes,anddeterminestheproportionofthe150controllersthataredefective.Whattypeofsampleisthis?BiasedrandomNonrandomSimplerandomStratifiedrandomClusterrandomAdistributionoftestscoresisnotsymmetric.Whichofthefollowingisthebestestimateofthez-scoreofthethirdquartile?Thisz-scorecannotbeestimatedfromtheinformationObtainedfromopen.773.im/CommercialUseSophomore,junior,andseniorstudentsatahighschoolwillbesurveyedregardingapotentialincreaseintheextracurricularstudentactivitiesfee.Therearethreepossibleresponsestothesurveyquestion—agreewiththeincrease,donotagreewiththeincrease,ornoopinion.Achi-squaretestwillbeconductedtodeterminewhethertheresponsetothisquestionisindependentoftheclassinwhichthestudentisaObtainedfromopen.773.im/CommercialUse(A)(B)(C)(D)(E)Obtainedfromopen.773.im/CommercialUseAcertaintypeofremote-controlcarhasafullychargedbatteryatthetimeofpurchase.Thedistributionofrunningtimesofcarsofthistype,beforetheyrequirerechargingofthebatteryforthefirsttimeafteritsperiodofinitialuse,isapproximaynormalwithameanof80minutesandastandardObtainedfromopen.773.im/CommercialUseTheprobabilitythattherunningtimeofarandomlyselectedcarofthistype,beforeitrequiresrechargingofthebatteryforthefirsttimeafteritsperiodofinitialuse,isbetween75minutesand82.5minutes.Theprobabilitythattherunningtimeofarandomlyselectedcarofthistype,beforeitrequiresrechargingofthebatteryforthefirsttimeafteritsperiodofinitialuse,isbetween75minutesand85minutes.Theprobabilitythattherunningtimeofarandomlyselectedcarofthistype,beforeitrequiresrechargingofthebatteryforthefirsttimeafteritsperiodofinitialuse,isbetween77.5minutesand82.5minutes.Theprobabilitythattherunningtimeofarandomlyselectedcarofthistype,beforeitrequiresrechargingofthebatteryforthefirsttimeafteritsperiodofinitialuse,isbetween77.5minutesand85minutes.Theprobabilitythattherunningtimeofarandomlyselectedcarofthistype,beforeitrequiresrechargingofthebatteryforthefirsttimeafteritsperiodofinitialuse,isbetween77.5minutesand87.5minutes.Whichofthefollowingscatterplotscouldrepresentadatasetwithacorrelationcoefficientofr=-1?43210

43210

43210

43210

ObtainedfromObtainedfromopen.773.im/CommercialUse43210

Obtainedfromopen.773.im/CommercialUsePublishersofamagazinewishtodeterminewhatproportionofthemagazine’s50,000subscribersarepleasedwiththeirsubscription.ThepublishersintendtomailasurveytoObtainedfromopen.773.im/CommercialUseMailsurveysto2,000subscribersrandomlyselectedfromthosewhohavereceivedthemagazinefor5yearsormore.Mailsurveysto1,000subscribersrandomlyselectedfromthosewhohavereceivedthemagazinefor1yearorless.Mailsurveysto1,000subscribersrandomlyselectedfromallMailsurveysto1,000subscribersrandomlyselectedfromthosewhohavereceivedthemagazinefor5yearsormoreand1,000subscribersrandomlyselectedfromthosewhohavereceivedthemagazinefor1yearorMailsurveysto500subscribersrandomlyselectedfromagroupwhohavereceivedasix-monthsubscriptionwithinthepastyear.Obtainedfromopen.773.im/CommercialUseAnenvironmentalscientistwantstotestthenullhypothesisthatanantipollutionObtainedfromopen.773.im/CommercialUseThescientistconcludesthattheantipollutiondeviceiseffectivewhenitactuallyisThescientistconcludesthattheantipollutiondeviceisnoteffectivewhenitactuallyThescientistconcludesthattheantipollutiondeviceiseffectivewhenitactuallyThescientistconcludesthattheantipollutiondeviceisnoteffectivewhenitactuallyisATypeIerrorcannotbecommittedinthisObtainedfromopen.773.im/CommercialUseAdatasetoftestscoresisbeingtransformedbyapplyingthefollowingruleObtainedfromopen.773.im/CommercialUseTransformedscore=3.5(rawscore)+6.2WhichofthefollowingisNOTtrue?Themeantransformedscoreequals3.5(themeanrawscore)+Themediantransformedscoreequals3.5(themedianrawscore)+Therangeofthetransformedscoresequals3.5(therangeoftherawscores)+Thestandarddeviationofthetransformedscoresequals3.5(thestandarddeviationoftherawTheIQRofthetransformedscoresequals3.5(theIQRoftherawObtainedfromopen.773.im/CommercialUseArandomsampleof25householdsfromtheMountainviewSchoolDistrictwassurveyed.Inthissurvey,datawerecollectedontheageoftheyoungestchildlivingineachhousehold.TheObtainedfromopen.773.im/CommercialUseInwhichofthefollowingintervalsisthemedianofthesedata0yearsoldtolessthan2years4yearsoldtolessthan6years6yearsoldtolessthan8years8yearsoldtolessthan10years10yearsoldtolessthan12yearsObtainedfromopen.773.im/CommercialUseBasedonarandomsampleof50students,the90percentconfidenceintervalforthemeanamountofmoneystudentsspendonlunchatacertainhighschoolisfoundtobe($3.45,Obtainedfromopen.773.im/CommercialUse90%ofthetime,themeanamountofmoneythatallstudentsspendonlunchatthishighschoolwillbebetween$3.45and$4.15.90%ofallstudentsspendbetween$3.45and$4.15onlunchatthishigh90%ofallrandomsamplesof50studentsobtainedatthishighschoolwouldresultinasamplemeanamountofmoneystudentsspendonlunchbetween$3.45and$4.15.90%ofallrandomsamplesof50studentsobtainedatthishighschoolwouldresultina90%confidenceintervalthatcontainsthetruemeanamountofmoneystudentsspendonlunch.Approximay45ofthe50studentsintherandomsamplewillspendbetween$3.45and$4.15onlunchatthishighschool.Obtainedfromopen.773.im/CommercialUseTenpercentofallDynamiteMintscandiesareorangeand45percentofallHolidayMintscandiesareorange.Twoindependentrandomsamples,eachofsize25,areselectedonefromDynamiteMintscandiesandtheotherfromHolidayMintscandies.ThetotalnumberoforangecandiesintheObtainedfromopen.773.im/CommercialUse7and7and13.75and13.75and13.75andInarandomsampleof60shopperschosenfromtheshoppersatalargesuburbanmall,36indicatedthattheyhadbeentoamovieinthepastmonth.Inanindependentrandomsampleof50shopperschosenfromtheshoppersinalargedowntownshoparea,31indicatedthattheyhadbeentoamovieinthepastmonth.Whatsignificancetestshouldbeusedtodeterminewhetherthesedataprovidesufficientevidencetothehypothesisthattheproportionofshoppersatthesuburbanmallwhohadbeentoamovieinthepastmonthisthesameastheproportionofshoppersinthelargedowntownshopareawhohadbeentoamovieinthepastmonth?Oneproportionz-Onesamplez-testforaOnesamplet-testforaTwoproportionz-Twosamplet-testforObtainedfromopen.773.im/CommercialUseQuestions18-19refertotheObtainedfromopen.773.im/CommercialUseInthe1830s,landsurveyorsbegantosurveythelandacquiredintheLouisianaPurchase.Partoftheirtaskwastonotethesizesoftreestheyencounteredintheirsurveying.Thetableofdatabelowisforburoaktreesmeasuredduringthesurvey.Tree(in Cumulative 42255767589341281131Obtainedfromopen.773.im/CommercialUseWhichofthefollowingdifferencesincumulativerelativefrequenciesgivesObtainedfromopen.773.im/CommercialUse0.615-0.615-0.731-Anoutliermaybedefinedasadatapointthatismorethan1.5timestheinterquartilerangebelowthelowerquartileorismorethan1.5timestheinterquartilerangeabovetheupperquartile.Accordingtothisdefinition,whatisthediameter,ininches,ofthesmallesttreethatisanoutlier?4Obtainedfromopen.773.im/CommercialUseTheNationalHonorSocietyatCentralHighSchoolnstosamplearandomgroupof100seniorsfromObtainedfromopen.773.im/CommercialUseIncreasetheconfidenceleveltoUsethepopulationstandardUsethesamplestandardIncreasethesampleDecreasethesampleNinetypercentofthepeoplewhohaveaparticulardiseasewillhaveapositiveresultonagivendiagnostictest.Ninetypercentofthepeoplewhodonothavethediseasewillhaveanegativeresultonthistest.If5percentofacertainpopulationhasthedisease,whatpercentofthatpopulationwouldtestpositiveforthedisease?Obtainedfromopen.773.im/CommercialUseArecentsurveyconcludedthattheproportionofAmericanteenagerswhohaveaObtainedfromopen.773.im/CommercialUse1000100010001000Obtainedfromopen.773.im/CommercialUseAmarketingwantstoestimatetheproportionofconsumersinacertainregionofthecountrywhowouldreactfavorablytoanewmarketingn.Further,the wantstheestimatetohaveamarginoferrorofnomorethan5percentwith90percentconfidence.Ofthefollowing,whichisObtainedfromopen.773.im/CommercialUseTrafficdatarevealedthat35percentofautostravelingalongaportionofaninterstatehighwaywereexceedingthelegalspeedlimit.Usinghighwaycamerasandlicenseteregistrations,itwasalsodeterminedthat52percentofsportscarswerealsospeedingalongthesameportionofthehighway.Whatistheprobabilitythatarandomlyselectedcaralongthesameportionofthehighwaywasaspeedingsportscar?ItcannotbedeterminedfromtheinformationObtainedfromopen.773.im/CommercialUseInalargeschooldistrict,16of85randomlyselectedhighschoolseniorsyavarsitysport.Inthesamedistrict,19of67randomlyselectedhighschooljuniorsyavarsitysport.A95percentconfidenceintervalforthedifferencebetweentheproportionofhighschoolseniorswhoyavarsitysportintheschooldistrictandhighschooljuniorswhoyavarsitysportintheschooldistrictistobecalculated.Obtainedfromopen.773.im/CommercialUseObtainedfromopen.773.im/CommercialUseThenumberofpoints,X,scoredinaObtainedfromopen.773.im/CommercialUseThenumberofpointsobtainedinonegameisindependentofthenumberofpointsobtainedinasecondgame.Whenthegameisyedtwice,thesumofthenumberofpointsforbothtimescouldbe0,1,2,3,or4.IfYrepresentsthesamplingdistributionofthesumofthescoreswhenthegameisyedtwice,forwhichvalueofYwilltheprobabilitybegreatest?(A)(B)(C)(D)(E)Eachinarandomsampleofadultsindicatedhisorherfavoritecolor.Theresults,showninthetablebelow,arereportedbyagegroupoftherespondents.Under30-OverIfchoiceofcolorisindependentofagegroup,whichofthefollowingexpressionsisequaltotheexpectednumberofrespondentswhoareaged30to50,inclusive,andprefergreen?ObtainedObtainedfromopen.773.im/CommercialUse

Obtainedfromopen.773.im/CommercialUseInarecentsurvey,60randomlyselectedmarriedcouplesfromthesametownwereaskedtoratetheoverallqualityoflivingintheirtownonascalefrom1(verypoor)to10(excellent)ontwentydifferentattributessuchasaccessibilitytomajorhighways,availabilityofentertainment,servicesprovidedbytaxdollars,etc.Foreachcouple,thehusband’sindividualratingsonthetwentyattributeswereaveragedtoproduceanoverallqualityrating,andthatprocesswasrepeatedforthewife.EachpointonthescatterplotObtainedfromopen.773.im/CommercialUseBasedonthescatterplot,whichofthefollowingstatementsisHusbandstendedtoratethequalityoflivinghigherthantheirwivesMoreoverallratingsof7orlesswereassignedbyhusbandsthanbyTherangeinthehusbands’overallratingsisgreaterthantherangeinthewives’overallThedifferenceinoverallratingsbetweenahusbandandwifewasnotmorethan3foranyForeachcouple,theoverallratingassignedbythehusbandwasthesameastheoverallratingassignedbythewife.A90percentconfidenceintervalistobecreatedtoestimatetheproportionofevisionviewersinacertainareawhofavormovingthebroadcastofthelateweeknightnewstoanhourearlierthanitiscurrently.Initially,theconfidenceintervalwillbecreatedusingasimplerandomsampleof9,000viewersinthearea.Assumingthatthesampleproportiondoesnotchange,whatwouldbetherelationshipbetweenthewidthoftheoriginalconfidenceintervalandthewidthofasecond90percentconfidenceintervalthatiscreatedbasedonasampleofonly1,000viewersinthearea?Thesecondconfidenceintervalwouldbe9timesaswideastheoriginalconfidenceThesecondconfidenceintervalwouldbe3timesaswideastheoriginalconfidenceThewidthofthesecondconfidenceintervalwouldbeequaltothewidthoftheoriginalconfidenceObtainedfromopen.773.im/CommercialUseTheObtainedfromopen.773.im/CommercialUse3Thesecondconfidenceintervalwouldbe9

aswideastheoriginalconfidenceinterval.aswideastheoriginalconfidenceObtainedfromopen.773.im/CommercialUseAnewrestaurantisinterestedindeterminingthebesttime-temperaturecombinationforroastingafive-poundcutoflamb.Thetimestobetestedare45minutes,60minutes,and90Obtainedfromopen.773.im/CommercialUsetime-temperaturecombinationsinthesameoven.Thequalityofthefinishedproductisevaluatedforeachroast.Whichofthefollowingistrue?TheexnatoryvariableisthequalityofthefinishedTheresponsevariableistheroastingtemperaturefortheIftheexperimentisrepeated,identicalresultswillbeThereshouldbeacontrolgroup(i.e.,agroupinwhichnotreatmentisThetwocutsthatarebeingroastedforeachtime-temperaturecombinationareanexampleofObtainedfromopen.773.im/CommercialUseAlocalrealestatemagazineusedthemedianinsteadofthemeanwhenitreportedtheSATscoreoftheaveragestudentwhoattendsGrovelandHighSchool.AgraphicaldisyofSATObtainedfromopen.773.im/CommercialUsetheaveragestudentthanthemeanThemeanisaffectedbytheskewness,whereasthemedianisThemedianisalwaysthepreferredThemeanwillbelessthanthemedianwhenthedataarestronglyskewedtotheThemeanshouldbeusedonlywhendataarestronglyskewedtotheThemedianisequaltoone-halfthesumoftheumandminimumSATscoresatGrovelandObtainedfromopen.773.im/CommercialUseThedirectorofafitnesscenterwantstoexaminetheeffectsoftwoexerciseObtainedfromopen.773.im/CommercialUseonthesamedays,sothata canenrollinonlyoneofthem.Anewclassofeachisabouttobegin,andeachclasshas25peopleinit.Tenpeoplearerandomlyselectedfromeachclass.Each’sbodyfatpercentageismeasuredatthebeginningandagainattheendofthesix-weekclass.Usingthechangeinbodyfatpercentageastheresponsevariableandconductingatestatthea=0.01level,thedirectordeterminesthatthereisasignificantdifferencebetweenthetreatmentmeans.WhichofthefollowingisaconfoundingvariableintheThedirector’schoiceofspinningandaerobicsclassesasthetypesforuseintheTherandomsampleof10peoplefromeachTheparticipants’choiceofwhichclasstoTheuseofbodyfatpercentageasthemeasureofeffectivenessoftheThefactthatbothclasseswereconductedthreetimeseachweekatthesametimeofdayandforthesameamountoftimeeachdayObtainedfromopen.773.im/CommercialUseRaoulperformedanexperimentusing16winduprubberbandsingle-propellerairnes.Hewoundupthepropelleradifferentnumberoftimesandrecordedtheamountoftime(inseconds)thattheairObtainedfromopen.773.im/CommercialUseSETPTheregressionequationTime=0.924+0.0462S=R-Sq=R-Sq(adj)=WhichofthefollowingisTheregressionequationTime=0.924+0.0462S=R-Sq=R-Sq(adj)=0.0462±0.924±0.0462±0.924±0.0462±Obtainedfromopen.773.im/CommercialUseArecentstudywasconductedtoinvestigatethedurationoftimerequiredObtainedfromopen.773.im/CommercialUseBasedonthevaluesofthetruemeanandtruestandarddeviation,itcanbeconcludedthatthepopulationdistributionisnotnormalandthereforetheprobabilitycannotbecalculated.Obtainedfromopen.773.im/CommercialUseTodeterminewhetheremployeesatSiteXhavehighersalaries,onaverage,thanemployeesatObtainedfromopen.773.im/CommercialUseSiteSiteStandardnBasedonthedata,whichofthefollowingstatementsisAtthe5%significancelevel,employeesatSiteYhaveasignificantlyhighermeansalarythanemployeesatSiteXdo.Atthe1%significancelevel,employeesatSiteYhaveasignificantlyhighermeansalarythanemployeesatSiteXdo.Atthe5%significancelevel,employeesatSiteXhaveasignificantlyhighermeansalarythanemployeesatSiteYdo.Atthe1%significancelevel,employeesatSiteXhaveasignificantlyhighermeansalarythanemployeesatSiteYdo.Atthe10%significancelevel,thereisnosignificantdifferenceinsalariesbetweentheemployeesatthetwosites.Obtainedfromopen.773.im/CommercialUseThedirectorofatechnicalschoolwascuriousaboutwhetherthereisarelationshipbetweenstudentswhocompleteoneoftheschool’smostpopularhealthsciencesprogramsandwhetherthosestudentsgoontocompletemoreadvancedstudiesinthehealthscienceswithintwoyearsObtainedfromopen.773.im/CommercialUseCompletedMoreAdvancedCompletedMostPopularHealthSciences5Whichofthefollowingstatementsistrueforthese100Beinga whocompletedmoreadvancedstudiesismorelikelythanbeinga whodidnotcompletemoreadvancedstudies.Beinga whocompletedtheprogramislesslikelythanbeinga whodidnotcompletetheBeinga whocompletedtheprogramandcompletedmoreadvancedstudiesislesslikelythanbeingawhodidnotcompletetheprogramanddidnotcompletemoreadvancedstudies.Beinga whodidnotcompletetheprogrambutcompletedmoreadvancedstudiesislesslikelythanbeinga whocompletedtheprogramandcompletedmoreadvancedstudies.Beinga whocompletedtheprogrambutdidnotcompletemoreadvancedstudiesismorelikelythanbeinga whodidnotcompletetheprogramanddidnotcompletemoreadvancedstudies.Obtainedfromopen.773.im/CommercialUseOntheirbirthdays,employeesatalargearepermittedtotakea60-minutelunchbreakinsteadoftheusual30minutes.Datawereobtainedfrom10randomlyselected employeesontheamountoftimethateachactuallytookforlunchonhisorherbirthday.The wishestoinvestigatewhetherthesedataprovideconvincingevidencethatthemeantimeisgreaterthan60minutes.OfObtainedfromopen.773.im/CommercialUseBeingwillingtoassumethatthedistributionofactualbirthdaylunchtimesforallemployeesattheisapproximaynormalKnowingthattherearenooutliersinthedataasindicatedbythenormalprobabilityplotandUsingat-statistictocarryouttheUsing9forthenumberofdegreesofGiventhatthep-valueisgreaterthan0.05,rejectingthenullhypothesisandconcludingthatthemeantimewasnotgreaterthan60minutesObtainedfromopen.773.im/CommercialUseAdogfoodwishestotestanewhigh-proteinformulaforpuppyfoodObtainedfromopen.773.im/CommercialUseBlockondogbreedandrandomlyassignpuppiestoexistingandnewformulagroupswithineachBlockongeographiclocationandrandomlyassignpuppiestoexistingandnewformulagroupswithineachgeographicarea.Stratifyondogbreedandrandomlysamplepuppieswithineachbreed.Thenassignpuppiesbybreedtoeithertheexistingorthenewformula.Stratifyongeographiclocationofthepuppiesandrandomlysamplepuppieswithineachgeographicarea.Thenassignpuppiesbygeographicareatoeithertheexistingorthenewformula.Stratifyongenderandrandomlysamplepuppieswithingendergroups.Thenassignpuppiesbygendertoeithertheexistingorthenewformula.Obtainedfromopen.773.im/CommercialUseAstatisticsstudentwantstocomparethemeantimesneededtoaccessObtainedfromopen.773.im/CommercialUsetheflightinformationusingtheWebsitehadameanof2.1minutesandastandarddeviationof1.1minutes.Assumingthattheconditionsforinferencearemet,whichofthefollowingstatementsaboutthep-valueobtainedfromthedataandtheconclusionofthesignificancetestistrue?Thep-valueislessthan0.01;therefore,thereisasignificantdifferenceinmeansearchtimesonthetwoWebsites.Thep-valueisgreaterthan0.01butlessthan0.05;therefore,thereisasignificantdifferenceinmeansearchtimesonthe