ONLINE TES GY
T BANK
GY
STATISTICAL REASONING FO GY GY
R EVERYDAY LIFE
GY GY
FIFTH EDITION GY
Jeffrey Bennett GY
University of Colorado at Boulder
GY GY GY GY
William L. Briggs GY GY
University of Colorado at Denver
GY GY GY GY
Mario F. Triola GY GY
Dutchess Community College
GY GY
,TheGYauthorGYandGYpublisherGYhaveGYusedGYtheirGYbestGYeffortsGYinGYpreparingGYthisGYsupplement. GYTheseGYeffortsGYinc
ludeGYtheGYdevelopment, GYresearch, GYandGYtestingGYofGYtheGYtheoriesGYandGYprogramsGYtoGYdetermineGYtheirGYeffective
ness.GYTheGYauthorGYandGYpublisherGYmakeGYnoGYwarrantyGYofGYanyGYkind,GYexpressedGYorGYimplied,GYwithGYregardGYto
GYtheseGYprograms GYorGYtheGYdocumentation GYcontained GYin GYthis GYbook. GYTheGYauthorGYand GYpublisher GYshall GYnot GYbe
GYliable GYin GYany GYevent GYforGYincidental GYorGYconsequential GYdamages GYin GYconnection GY with, GYorGYarising GYout GYof, GY
theGYfurnishing,GYperformance,GYorGYuseGYofGYtheseGYprograms.
ProvidedGYbyGYPearsonGYfromGYelectronicGYfilesGYsuppliedGYbyGYtheGYautho
r.GYCopyrightGY©GY2018,GY2014GYPearsonGYEducation,GYInc.
PublishingGYasGYPearson,GY501GYBoylstonGYStreet,GYBoston,GYMAGY02116.
AllGYrightsGYreserved.GYNoGYpartGYofGYthisGYpublicationGYmayGYbeGYreproduced, GYstoredGYinGYaGYretrievalGYsystem,GYorGY
transmitted, GYinGYanyGYformGYorGYbyGYanyGYmeans,GYelectronic,GYmechanical, GYphotocopying, GYrecording, GYorGYotherwi
se,GYwithoutGYtheGYpriorGYwrittenGYpermissionGYofGYtheGYpublisher.GYPrintedGYinGYtheGYUnitedGYStatesGYofGYAmerica.
ISBN-13:G Y 978-0-13-445697-3
ISBN-10:G Y 0-13-445697-1
www.pearsonhighered.com
,Contents
ChapterGY1 SpeakingGYofGYStatistics ................................................................................... 1
ChapterGY2 MeasurementGYinGYStatistics ........................................................................... 13
ChapterGY3 VisualGYDisplaysGYofGYData ............................................................................ 21
ChapterGY4 DescribingGYData ........................................................................................... 44
ChapterGY5 AGYNormalGYWorld ........................................................................................ 63
ChapterGY6 ProbabilityGYinGYStatistics............................................................................... 71
ChapterGY7 CorrelationGYandGYCausality ........................................................................... 83
ChapterGY8 InferencesGYfromGYSamplesGYtoGYPopulations ............................................... 100
ChapterGY9 HypothesisGYTesting .................................................................................... 108
ChapterGY10 tGYTests,GYTwo-WayGYTables,GYandGYANOVA ............................................ 123
Answers ........................................................................................................................... 135
iii
, Statistical Reasoning for Everyday Life
GY GY GY GY
Chapter 1 (Speaking of Statistics) Exam, form A
GY GY GY GY GY GY GY
MULTIPLEGYCHOICE.GYChooseGYtheGYoneGYalternativeGYthatGYbestGYcompletesGYtheGYstate
mentGYorGYanswersGYtheGYquestion.
ForGYproblemsGY1GYandGY2,GYdetermineGYwhetherGYtheGYevaluatedGYgroupGYisGYaGYpopulationGYorGYaGYsa
mple.
1) TheGYaverageGY(mean)GYageGYofGYallGY63GYAssociateGYProfessorsGYatGYClifftonGYUniversityGYisGY47GYyears.
A) Population B)GYSample
2) AGYresearcherGYexaminesGYtheGYpropertyGYtaxGYrecordsGYofGY84GYpropertyGYownersGYinGYoneGYcityGYan
dGYfindsGYthatGY17%GYareGYbehindGYinGYtheirGYtaxGYpayments.
A) Population B)GYSample
ForGYproblemsGY3GYandGY4,GYdetermineGYwhetherGYtheGYgivenGYvalueGYisGYaGYstatisticGYorGYaGYparameter.
3) TheGYaverageGY(mean)GYageGYofGYallGY63GYAssociateGYProfessorsGYatGYClifftonGYUniversityGYisGY47GYyears.
A) Statistic B)GYParameter
4) AGYresearcherGYexaminesGYtheGYpropertyGYtaxGYrecordsGYofGY84GYpropertyGYownersGYinGYoneGYcityGYan
dGYfindsGYthatGY17%GYareGYbehindGYinGYtheirGYtaxGYpayments.
A) Statistic B)GYParameter
5) FollowingGYtheGYRepublicanGYNationalGYConvention,GYaGYpollGYofGY600GYvotersGYinGYaGYcentralGYIllino
isGYcommunityGYshowedGYthatGY57%GYexpectedGYtheGYRepublicanGYticketGYtoGYwinGYoverGYtheGYDemoc
ratGYticketGYnoGYmatterGYwhomGYtheGYDemocratsGYchoseGYforGYvice-
president.GYTheGYmarginGYofGYerrorGYwasGY4GYpercentageGYpoints.GYThereGYareGY25,000GYregisteredGYv
otersGYinGYtheGYcommunity.GYWhichGYrangeGYofGYvaluesGYisGYlikelyGYtoGYcontainGYtheGYpopulationGYpar
ameter?
A) 13,250GYtoGY15,250 B)GY24,400GYtoGY25,600
C)GY318GYtoGY366 D)GY53%GYtoGY61%
6) AGYpollGYofGY488GYcitizensGYofGYNormal,GYIllinois,GYshowedGYthatGY65%GYfavoredGYstrictGYenforcementG
YofGYspeedGYlimitsGYwithGYaGYmarginGYofGYerrorGYofGY4%.GYAGYsecondGYpollGYofGY495GYcitizensGYofGYtheGY
sameGYtownGYshowedGYthatGY34%GYfavoredGYstrictGYenforcementGYofGYspeedGYlimits.GYAssumingGYthatGY
properGYsamplingGYtechniquesGYwereGYusedGYinGYbothGYpolls,GYoneGYmayGYconcludeGYthat
A) theGYpercentGYofGYtheGYpopulationGYthatGYfavorsGYstrictGYenforcementGYofGYspeedGYlimitsGYisGY49.5%GYGY8%.
B) theGYpercentGYofGYtheGYpopulationGYthatGYfavorsGYstrictGYenforcementGYofGYspeedGYlimitsGYisGY49.5%GYGY4%.
C) oneGYorGYbothGYofGYtheGYsamplesGYmayGYhaveGYbeenGYunlikelyGYsamplesGYfromGYtheGYpopulation.
D) theGYpercentGYofGYtheGYpopulationGYthatGYfavorsGYstrictGYenforcementGYofGYspeedGYlimitsGYisGY65%GYGY8%.
7) AGYpollGYofGY700GYattendeesGYofGYtheGYTasteGYofGYChicagoGYshowedGYthatGY445GYattendees,GY65%GYofG
YtheGYsample,GYbelievedGYthatGYtheGYfoodGYwasGYoverpriced.GYItGYisGYestimatedGYthatGY1,250,000GYpeopl
eGYattendGYtheGYTaste.GYAlthoughGY65%GYplusGYorGYminusGY5%GYofGYattendeesGYbelieveGYthatGYtheGYfoo
dGYisGYoverpriced,GYtheGYTasteGYisGYaGYpopularGYevent.GYTheGYrawGYdataGYofGYtheGYstudyGYisGY(are)
A) 65%GYofGYtheGYsample.
B) 700GYattendees,GY455GYattendees.
C) 1,250,000GYattendees,GY700GYattendees,GY455GYattendees.
D) (60%,GY70%)
8) AGYstudentGYwantedGYtoGYknowGYtheGYfavoriteGYlunchGYatGYaGYlargeGYhighGYschoolGYwithGYaGYclosedGYca
mpus.GYWhatGYisGYtheGYfirstGYstepGYinGYconductingGYaGYstatisticalGYstudyGYtoGYanswerGYtheGYquestion?
A) SelectGYaGYrandomGYsampleGYofGYstudents.
B) PreciselyGYstateGYtheGYgoalGYofGYtheGYstudy.
C) SelectGYaGYrandomGYsampleGYofGYstudentsGYandGYteachers.
D) SelectGYaGYrandomGYsampleGYofGYteachers.
1
CopyrightGY©GY2018GYPearsonGYEducation,
GYInc.
T BANK
GY
STATISTICAL REASONING FO GY GY
R EVERYDAY LIFE
GY GY
FIFTH EDITION GY
Jeffrey Bennett GY
University of Colorado at Boulder
GY GY GY GY
William L. Briggs GY GY
University of Colorado at Denver
GY GY GY GY
Mario F. Triola GY GY
Dutchess Community College
GY GY
,TheGYauthorGYandGYpublisherGYhaveGYusedGYtheirGYbestGYeffortsGYinGYpreparingGYthisGYsupplement. GYTheseGYeffortsGYinc
ludeGYtheGYdevelopment, GYresearch, GYandGYtestingGYofGYtheGYtheoriesGYandGYprogramsGYtoGYdetermineGYtheirGYeffective
ness.GYTheGYauthorGYandGYpublisherGYmakeGYnoGYwarrantyGYofGYanyGYkind,GYexpressedGYorGYimplied,GYwithGYregardGYto
GYtheseGYprograms GYorGYtheGYdocumentation GYcontained GYin GYthis GYbook. GYTheGYauthorGYand GYpublisher GYshall GYnot GYbe
GYliable GYin GYany GYevent GYforGYincidental GYorGYconsequential GYdamages GYin GYconnection GY with, GYorGYarising GYout GYof, GY
theGYfurnishing,GYperformance,GYorGYuseGYofGYtheseGYprograms.
ProvidedGYbyGYPearsonGYfromGYelectronicGYfilesGYsuppliedGYbyGYtheGYautho
r.GYCopyrightGY©GY2018,GY2014GYPearsonGYEducation,GYInc.
PublishingGYasGYPearson,GY501GYBoylstonGYStreet,GYBoston,GYMAGY02116.
AllGYrightsGYreserved.GYNoGYpartGYofGYthisGYpublicationGYmayGYbeGYreproduced, GYstoredGYinGYaGYretrievalGYsystem,GYorGY
transmitted, GYinGYanyGYformGYorGYbyGYanyGYmeans,GYelectronic,GYmechanical, GYphotocopying, GYrecording, GYorGYotherwi
se,GYwithoutGYtheGYpriorGYwrittenGYpermissionGYofGYtheGYpublisher.GYPrintedGYinGYtheGYUnitedGYStatesGYofGYAmerica.
ISBN-13:G Y 978-0-13-445697-3
ISBN-10:G Y 0-13-445697-1
www.pearsonhighered.com
,Contents
ChapterGY1 SpeakingGYofGYStatistics ................................................................................... 1
ChapterGY2 MeasurementGYinGYStatistics ........................................................................... 13
ChapterGY3 VisualGYDisplaysGYofGYData ............................................................................ 21
ChapterGY4 DescribingGYData ........................................................................................... 44
ChapterGY5 AGYNormalGYWorld ........................................................................................ 63
ChapterGY6 ProbabilityGYinGYStatistics............................................................................... 71
ChapterGY7 CorrelationGYandGYCausality ........................................................................... 83
ChapterGY8 InferencesGYfromGYSamplesGYtoGYPopulations ............................................... 100
ChapterGY9 HypothesisGYTesting .................................................................................... 108
ChapterGY10 tGYTests,GYTwo-WayGYTables,GYandGYANOVA ............................................ 123
Answers ........................................................................................................................... 135
iii
, Statistical Reasoning for Everyday Life
GY GY GY GY
Chapter 1 (Speaking of Statistics) Exam, form A
GY GY GY GY GY GY GY
MULTIPLEGYCHOICE.GYChooseGYtheGYoneGYalternativeGYthatGYbestGYcompletesGYtheGYstate
mentGYorGYanswersGYtheGYquestion.
ForGYproblemsGY1GYandGY2,GYdetermineGYwhetherGYtheGYevaluatedGYgroupGYisGYaGYpopulationGYorGYaGYsa
mple.
1) TheGYaverageGY(mean)GYageGYofGYallGY63GYAssociateGYProfessorsGYatGYClifftonGYUniversityGYisGY47GYyears.
A) Population B)GYSample
2) AGYresearcherGYexaminesGYtheGYpropertyGYtaxGYrecordsGYofGY84GYpropertyGYownersGYinGYoneGYcityGYan
dGYfindsGYthatGY17%GYareGYbehindGYinGYtheirGYtaxGYpayments.
A) Population B)GYSample
ForGYproblemsGY3GYandGY4,GYdetermineGYwhetherGYtheGYgivenGYvalueGYisGYaGYstatisticGYorGYaGYparameter.
3) TheGYaverageGY(mean)GYageGYofGYallGY63GYAssociateGYProfessorsGYatGYClifftonGYUniversityGYisGY47GYyears.
A) Statistic B)GYParameter
4) AGYresearcherGYexaminesGYtheGYpropertyGYtaxGYrecordsGYofGY84GYpropertyGYownersGYinGYoneGYcityGYan
dGYfindsGYthatGY17%GYareGYbehindGYinGYtheirGYtaxGYpayments.
A) Statistic B)GYParameter
5) FollowingGYtheGYRepublicanGYNationalGYConvention,GYaGYpollGYofGY600GYvotersGYinGYaGYcentralGYIllino
isGYcommunityGYshowedGYthatGY57%GYexpectedGYtheGYRepublicanGYticketGYtoGYwinGYoverGYtheGYDemoc
ratGYticketGYnoGYmatterGYwhomGYtheGYDemocratsGYchoseGYforGYvice-
president.GYTheGYmarginGYofGYerrorGYwasGY4GYpercentageGYpoints.GYThereGYareGY25,000GYregisteredGYv
otersGYinGYtheGYcommunity.GYWhichGYrangeGYofGYvaluesGYisGYlikelyGYtoGYcontainGYtheGYpopulationGYpar
ameter?
A) 13,250GYtoGY15,250 B)GY24,400GYtoGY25,600
C)GY318GYtoGY366 D)GY53%GYtoGY61%
6) AGYpollGYofGY488GYcitizensGYofGYNormal,GYIllinois,GYshowedGYthatGY65%GYfavoredGYstrictGYenforcementG
YofGYspeedGYlimitsGYwithGYaGYmarginGYofGYerrorGYofGY4%.GYAGYsecondGYpollGYofGY495GYcitizensGYofGYtheGY
sameGYtownGYshowedGYthatGY34%GYfavoredGYstrictGYenforcementGYofGYspeedGYlimits.GYAssumingGYthatGY
properGYsamplingGYtechniquesGYwereGYusedGYinGYbothGYpolls,GYoneGYmayGYconcludeGYthat
A) theGYpercentGYofGYtheGYpopulationGYthatGYfavorsGYstrictGYenforcementGYofGYspeedGYlimitsGYisGY49.5%GYGY8%.
B) theGYpercentGYofGYtheGYpopulationGYthatGYfavorsGYstrictGYenforcementGYofGYspeedGYlimitsGYisGY49.5%GYGY4%.
C) oneGYorGYbothGYofGYtheGYsamplesGYmayGYhaveGYbeenGYunlikelyGYsamplesGYfromGYtheGYpopulation.
D) theGYpercentGYofGYtheGYpopulationGYthatGYfavorsGYstrictGYenforcementGYofGYspeedGYlimitsGYisGY65%GYGY8%.
7) AGYpollGYofGY700GYattendeesGYofGYtheGYTasteGYofGYChicagoGYshowedGYthatGY445GYattendees,GY65%GYofG
YtheGYsample,GYbelievedGYthatGYtheGYfoodGYwasGYoverpriced.GYItGYisGYestimatedGYthatGY1,250,000GYpeopl
eGYattendGYtheGYTaste.GYAlthoughGY65%GYplusGYorGYminusGY5%GYofGYattendeesGYbelieveGYthatGYtheGYfoo
dGYisGYoverpriced,GYtheGYTasteGYisGYaGYpopularGYevent.GYTheGYrawGYdataGYofGYtheGYstudyGYisGY(are)
A) 65%GYofGYtheGYsample.
B) 700GYattendees,GY455GYattendees.
C) 1,250,000GYattendees,GY700GYattendees,GY455GYattendees.
D) (60%,GY70%)
8) AGYstudentGYwantedGYtoGYknowGYtheGYfavoriteGYlunchGYatGYaGYlargeGYhighGYschoolGYwithGYaGYclosedGYca
mpus.GYWhatGYisGYtheGYfirstGYstepGYinGYconductingGYaGYstatisticalGYstudyGYtoGYanswerGYtheGYquestion?
A) SelectGYaGYrandomGYsampleGYofGYstudents.
B) PreciselyGYstateGYtheGYgoalGYofGYtheGYstudy.
C) SelectGYaGYrandomGYsampleGYofGYstudentsGYandGYteachers.
D) SelectGYaGYrandomGYsampleGYofGYteachers.
1
CopyrightGY©GY2018GYPearsonGYEducation,
GYInc.
