Test Bank For Intermediate Statistical I investigations 1Ed by Nathan Tintle, Beth L. Chance, Karen Mc Gaughey, Soma Roy, Todd Swa son, Jill Vande step Chapter 1 - 6

TEST BANK FOR
Intermediate Statistical I investigations 1e Nathan Tintle, Beth L. Chance, Karen Mc Gaughey, Soma Roy,
Todd Swa son, Jill Vande step
Chapte r 1 - 6




Chapte r T 1
IntermediateTStatisticalTInvestigationsTTestTBank

QuestionTtypes: FIBT=TFillTinTtheTblank CalcT=TCalculation
MaT=TMatching MST=TMultipleTselec
t
MCT=TMultipleTchoice TFT=TTrue-false



CHAPTERT1TTERMINALTLEARNINGTOUTCOMES
TLO1-1:TApplyTtheTsix-stepTinvestigativeTprocessTinTtheTcontextTofTaTwell-designedTexperiment.
TLO1-
2:TPartitioningTvariationTinTtheTresponseTvariableTintoTvariationTexplainedTbyTtheTmodelTandTune
xplainedTvariation,TandTmeasuringTandTreportingTtheTpercentageTofTvariationTexplained
TLO1-
3:TAssessTtheTstatisticalTsignificanceTofTtheTdifferenceTbetweenTtwoTgroupsTonTaTquant
itativeTresponseTvariableTusingTbothTsimulationTandTtheory-basedTapproaches
TLO1-
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, 4:TCompareTmoreTthanTtwoTtreatmentsTonTaTquantitativeTresponseTusingTbothTsimul
ationTandTtheory-basedTapproaches
TLO1-5:TApplyTPost-hocTanalysisTafterTsignificantTF-
testT(pairwiseTdifferences,TasTwellTasTconfidenceTandTpredictionTintervalsTforTsingle
Tmeans)

TLO1-
6:TUnderstandTstatisticalTpowerTandThowTitTisTimpactedTbyTsampleTsize,TvariabilityT
withinTgroups,TnumberTofTgroups,TandTsignificanceTlevel


SectionT1.1:TSourcesTofTVariationTinTanTExperiment
LO1.1-1:TApplyTtheTsix-stepTinvestigativeTprocess.
LO1.1-2:TDistinguishTexperimentsTandTobservationalTstudies.
LO1.1-
3:TReviewTbasicTstudyTdesignTprinciplesTsuchTasTinclusionTcriteriaTandTrandomTassignment.TL
O1.1-4:TDefineTterminologyTspecificTtoTanTexperimentalTstudyT(e.g.,Ttreatments).
LO1.1-5:TProduceTaTSourcesTofTVariationTdiagramTforTanTexperiment.


QuestionsT1TthroughT3:T ATstudyTpublishedTinTPsychologicalTScienceTinT2007TexaminedTaTp
ossi-
TbleTlinkTbetweenTmindsetTandThealth.TTheTfollowingTisTanTexcerptTfromTtheTabstractTo
fTtheTarticle:T―84TfemaleTroomTattendantsTworkingTinTsevenTdifferentThotelsTwereTmeas
uredTonTphysiologicalThealthTvariablesTaffectedTbyTexercise.TThoseTinTtheTinformedTco
nditionTwereTtoldTthatTtheTworkTtheyTdoT(cleaningThotelTrooms)TisTgoodTexerciseTandTs
atisfiesTtheTSur-
TgeonTGeneral'sTrecommendationsTforTanTactiveTlifestyle.TExamplesTofThowTtheirTworkT
wasTexerciseTwereTprovided.TSubjectsTinTtheTcontrolTgroupTwereTnotTgivenTthisTinform
ation.‖
1. IdentifyTtheTexperimentalTunitsTinTthisTstudy.
A. TheTeighty-fourTroomTattendants




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,
, 1-2
B. TheTsevenTdifferentThotels
C. TheTphysiologicalThealthTvariables
D. TheTtwoTgroupsT(informedTandTcontr

ol)TAns:TA;TLO:T1.1-

4;TDifficulty:TEasy;TType:TMC

2. TheTresearchersTchoseTtoTincludeTroomTattendantsTfromTsevenTdifferentThotelsT(as
Top-
TposedTtoTusingTstricterTinclusionTcriteriaTthatTwouldTlimitTtheTstudyTtoTroomTattend
antsTatToneTparticularThotel).TDescribeTtheTconsequencesTofTthisTdecision.

UsingTbroaderTinclusionTcriteriaTmayT
(increase/decrease)TtheTamountTofTvariatio
nTinTtheTobservedThealthToutcomes.THowever,TthisTdecisionTalsoT (sup-
Tports/limits)TgeneralizabilityTtoTaTlargerTpopulationTofTroomTattendants.


Ans:Tincrease,Tsupports;TLO:T1.1-3;TDifficulty:TMedium;TType:TFIB


3. RoomTattendantsTwereTrandomlyTassignedTtoTeitherTtheTinformedTconditionTorTtheTco
ntrolTgroup.TWhatTisTtheTmostTimportantTreasonTforTtheTrandomTassignment?
A. RandomTassignmentTensuresTthatTtheTstudyTisTdouble-blind.
B. RandomTassignmentTreducesTtheTimpactTofToutliers.
C. RandomTassignmentTcreatesTtwoTgroupsTofTroomTattendantsTthatTareTasTsimil
arTasTpossible,TwhichTsupportsTcause-and-effectTconclusions.
D. RandomTassignmentTmakesTitTpossibleTtoTgeneralizeTtheTresultsTtoTtheTpopulation.

Ans:TC;TLO:T1.1-3;TDifficulty:TMedium;TType:TMC


QuestionsT4TthroughT6:T AnTonlineTretailerTisTusingTanTexperimentTtoTdecideTwhetherTtoTmo
difyTtheirTwebsite.TWhenTvisitorsTtypeTinTtheTwebTaddressTorTclickTaTlinkTtoTtheTsite,Tt
heyTareTrandomlyTre-
directedTtoToneTofTtwoTversionsTofTtheTwebsite:TtheTversionTthatThasTbeenTinTuseTforTt
heTlastTyearT(versionTA)TorTanTupdatedTversionT(versionTB).TTheTretailer’sTgoalTisTtoT
maximizeTtheTamountTofTtimeT(inTminutes)TvisitorsTstayTonTtheTsite.
4. IdentifyTtheTexperimentalTunitsTandTvariables.TNote:TOneTofTtheTanswerTchoicesTwillTn
otTbeTused.

ExperimentalTunits: A.TVersionTofTtheTwebsiteT(ATandTB)
ExplanatoryTvariable: B:TOnlineTretailers
ResponseTvariable: C:TVisitorsTtoTtheTwebsite
D:TTimeTspentTonTtheTwebsiteT(inTminutes)

Ans:TExperimentalTunits:TC,TExplanatoryTvariable:TA,TResponseTvariable:TD;TLO:T1.1-
4;TDifficulty:TEasy;TType:TMa


5. ConsiderTtwoTpossibleTmodelsTforTanalyzingTtimeTspentTonTthisTretailer’sTwebsite.

Single-meanTmodel:
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