ONLINE TES X
T BANK
X
STATISTICAL REASONING FO X X
R EVERYDAY LIFE
X X
FIFTH EDITION X
Jeffrey Bennett x
University of Colorado at Boulder
x x x x
William L. Briggs x x
University of Colorado at Denver
x x x x
Mario F. Triola x x
Dutchess Community College
x x
,Thexauthorxandxpublisherxhavexusedxtheirxbestxeffortsxinxpreparingxthisxsupplement.xThesexeffortsxincludexthexdevelopm
ent,xresearch,xandxtestingxofxthextheoriesxandxprogramsxtoxdetermine xtheirxeffectiveness.xThexauthorxandxpublisherxmake
xno xwarrantyxofxanyxkind, xexpressedxorximplied, xwith xregardxtoxthese xprograms xorxthe xdocumentation xcontained xin xthis xb
ook.xThexauthorxandxpublisherxshallxnotxbexliable xinxanyxeventxforxincidental xorxconsequentialxdamagesxinxconnectionxw
ith,xorxarisingxoutxof,xthexfurnishing,xperformance,xorxusexofxthesexprograms.
ProvidedxbyxPearsonxfromxelectronic xfilesxsuppliedxbyxthexauthor.xCopyrig
htx©x2018,x2014xPearsonxEducation, xInc.
PublishingxasxPearson,x501xBoylstonxStreet,xBoston,xMAx02116.
Allxrightsxreserved.xNoxpartxofxthisxpublicationxmayxbexreproduced, xstoredxinxaxretrievalxsystem,xorxtransmitted,xinxanyxf
ormxorxbyxanyxmeans,xelectronic,xmechanical, xphotocopying,xrecording,xorxotherwise,xwithoutxthexpriorxwrittenxpermiss
ionxofxthexpublisher.xPrintedxinxthexUnitedxStatesxofxAmerica.
ISBN-13:x 978-0-13-445697-3
ISBN-10:x 0-13-445697-1
www.pearsonhighered.com
,Contents
Chapterx1 SpeakingxofxStatistics ...................................................................................... 1
Chapterx2 MeasurementxinxStatistics .............................................................................. 13
Chapterx3 VisualxDisplaysxofxData ................................................................................. 21
Chapterx4 DescribingxData............................................................................................. 44
Chapterx5 AxNormalxWorld............................................................................................ 63
Chapterx6 ProbabilityxinxStatistics .................................................................................. 71
Chapterx7 CorrelationxandxCausality .............................................................................. 83
Chapterx8 InferencesxfromxSamplesxtoxPopulations ..................................................... 100
Chapterx9 HypothesisxTesting ...................................................................................... 108
Chapterx10 txTests,xTwo-WayxTables,xandxANOVA .................................................... 123
Answers ........................................................................................................................... 135
iii
, Statistical Reasoning for Everyday Life
x x x x
Chapter 1 (Speaking of Statistics) Exam, form A
x x x x x x x
MULTIPLExCHOICE.xChoosexthexonexalternativexthatxbestxcompletesxthexstatementxorxan
swersxthexquestion.
Forxproblemsx1xandx2,xdeterminexwhetherxthexevaluatedxgroupxisxaxpopulationxorxaxsample.
1) Thexaveragex(mean)xagexofxallx63xAssociatexProfessorsxatxClifftonxUniversityxisx47xyears.
A) Population B)xSample
2) Axresearcherxexaminesxthexpropertyxtaxxrecordsxofx84xpropertyxownersxinxonexcityxandxfindsxthatx17%x
arexbehindxinxtheirxtaxxpayments.
A) Population B)xSample
Forxproblemsx3xandx4,xdeterminexwhetherxthexgivenxvaluexisxaxstatisticxorxaxparameter.
3) Thexaveragex(mean)xagexofxallx63xAssociatexProfessorsxatxClifftonxUniversityxisx47xyears.
A) Statistic B)xParameter
4) Axresearcherxexaminesxthexpropertyxtaxxrecordsxofx84xpropertyxownersxinxonexcityxandxfindsxthatx17%x
arexbehindxinxtheirxtaxxpayments.
A) Statistic B)xParameter
5) FollowingxthexRepublicanxNationalxConvention,xaxpollxofx600xvotersxinxaxcentralxIllinoisxcommunityxs
howedxthatx57%xexpectedxthexRepublicanxticketxtoxwinxoverxthexDemocratxticketxnoxmatterxwhomxthex
Democratsxchosexforxvice-
president.xThexmarginxofxerrorxwasx4xpercentagexpoints.xTherexarex25,000xregisteredxvotersxinxthexcom
munity.xWhichxrangexofxvaluesxisxlikelyxtoxcontainxthexpopulationxparameter?
A) 13,250xtox15,250 B)x24,400xtox25,600
C)x318xtox366 D)x53%xtox61%
6) Axpollxofx488xcitizensxofxNormal,xIllinois,xshowedxthatx65%xfavoredxstrictxenforcementxofxspeedxlimitsx
withxaxmarginxofxerrorxofx4%.xAxsecondxpollxofx495xcitizensxofxthexsamextownxshowedxthatx34%xfavoredx
strictxenforcementxofxspeedxlimits.xAssumingxthatxproperxsamplingxtechniquesxwerexusedxinxbothxpolls,x
onexmayxconcludexthat
A) thexpercentxofxthexpopulationxthatxfavorsxstrictxenforcementxofxspeedxlimitsxisx49.5%xx8%.
B) thexpercentxofxthexpopulationxthatxfavorsxstrictxenforcementxofxspeedxlimitsxisx49.5%xx4%.
C) onexorxbothxofxthexsamplesxmayxhavexbeenxunlikelyxsamplesxfromxthexpopulation.
D) thexpercentxofxthexpopulationxthatxfavorsxstrictxenforcementxofxspeedxlimitsxisx65%xx8%.
7) Axpollxofx700xattendeesxofxthexTastexofxChicagoxshowedxthatx445xattendees,x65%xofxthexsample,xbeliev
edxthatxthexfoodxwasxoverpriced.xItxisxestimatedxthatx1,250,000xpeoplexattendxthexTaste.xAlthoughx65%x
plusxorxminusx5%xofxattendeesxbelievexthatxthexfoodxisxoverpriced,xthexTastexisxaxpopularxevent.xThexra
wxdataxofxthexstudyxisx(are)
A) 65%xofxthexsample.
B) 700xattendees,x455xattendees.
C) 1,250,000xattendees,x700xattendees,x455xattendees.
D) (60%,x70%)
8) Axstudentxwantedxtoxknowxthexfavoritexlunchxatxaxlargexhighxschoolxwithxaxclosedxcampus.xWhatxisxthe
xfirstxstepxinxconductingxaxstatisticalxstudyxtoxanswerxthexquestion?
A) Selectxaxrandomxsamplexofxstudents.
B) Preciselyxstatexthexgoalxofxthexstudy.
C) Selectxaxrandomxsamplexofxstudentsxandxteachers.
D) Selectxaxrandomxsamplexofxteachers.
1
Copyrightx©x2018xPearsonxEducation,xInc.
T BANK
X
STATISTICAL REASONING FO X X
R EVERYDAY LIFE
X X
FIFTH EDITION X
Jeffrey Bennett x
University of Colorado at Boulder
x x x x
William L. Briggs x x
University of Colorado at Denver
x x x x
Mario F. Triola x x
Dutchess Community College
x x
,Thexauthorxandxpublisherxhavexusedxtheirxbestxeffortsxinxpreparingxthisxsupplement.xThesexeffortsxincludexthexdevelopm
ent,xresearch,xandxtestingxofxthextheoriesxandxprogramsxtoxdetermine xtheirxeffectiveness.xThexauthorxandxpublisherxmake
xno xwarrantyxofxanyxkind, xexpressedxorximplied, xwith xregardxtoxthese xprograms xorxthe xdocumentation xcontained xin xthis xb
ook.xThexauthorxandxpublisherxshallxnotxbexliable xinxanyxeventxforxincidental xorxconsequentialxdamagesxinxconnectionxw
ith,xorxarisingxoutxof,xthexfurnishing,xperformance,xorxusexofxthesexprograms.
ProvidedxbyxPearsonxfromxelectronic xfilesxsuppliedxbyxthexauthor.xCopyrig
htx©x2018,x2014xPearsonxEducation, xInc.
PublishingxasxPearson,x501xBoylstonxStreet,xBoston,xMAx02116.
Allxrightsxreserved.xNoxpartxofxthisxpublicationxmayxbexreproduced, xstoredxinxaxretrievalxsystem,xorxtransmitted,xinxanyxf
ormxorxbyxanyxmeans,xelectronic,xmechanical, xphotocopying,xrecording,xorxotherwise,xwithoutxthexpriorxwrittenxpermiss
ionxofxthexpublisher.xPrintedxinxthexUnitedxStatesxofxAmerica.
ISBN-13:x 978-0-13-445697-3
ISBN-10:x 0-13-445697-1
www.pearsonhighered.com
,Contents
Chapterx1 SpeakingxofxStatistics ...................................................................................... 1
Chapterx2 MeasurementxinxStatistics .............................................................................. 13
Chapterx3 VisualxDisplaysxofxData ................................................................................. 21
Chapterx4 DescribingxData............................................................................................. 44
Chapterx5 AxNormalxWorld............................................................................................ 63
Chapterx6 ProbabilityxinxStatistics .................................................................................. 71
Chapterx7 CorrelationxandxCausality .............................................................................. 83
Chapterx8 InferencesxfromxSamplesxtoxPopulations ..................................................... 100
Chapterx9 HypothesisxTesting ...................................................................................... 108
Chapterx10 txTests,xTwo-WayxTables,xandxANOVA .................................................... 123
Answers ........................................................................................................................... 135
iii
, Statistical Reasoning for Everyday Life
x x x x
Chapter 1 (Speaking of Statistics) Exam, form A
x x x x x x x
MULTIPLExCHOICE.xChoosexthexonexalternativexthatxbestxcompletesxthexstatementxorxan
swersxthexquestion.
Forxproblemsx1xandx2,xdeterminexwhetherxthexevaluatedxgroupxisxaxpopulationxorxaxsample.
1) Thexaveragex(mean)xagexofxallx63xAssociatexProfessorsxatxClifftonxUniversityxisx47xyears.
A) Population B)xSample
2) Axresearcherxexaminesxthexpropertyxtaxxrecordsxofx84xpropertyxownersxinxonexcityxandxfindsxthatx17%x
arexbehindxinxtheirxtaxxpayments.
A) Population B)xSample
Forxproblemsx3xandx4,xdeterminexwhetherxthexgivenxvaluexisxaxstatisticxorxaxparameter.
3) Thexaveragex(mean)xagexofxallx63xAssociatexProfessorsxatxClifftonxUniversityxisx47xyears.
A) Statistic B)xParameter
4) Axresearcherxexaminesxthexpropertyxtaxxrecordsxofx84xpropertyxownersxinxonexcityxandxfindsxthatx17%x
arexbehindxinxtheirxtaxxpayments.
A) Statistic B)xParameter
5) FollowingxthexRepublicanxNationalxConvention,xaxpollxofx600xvotersxinxaxcentralxIllinoisxcommunityxs
howedxthatx57%xexpectedxthexRepublicanxticketxtoxwinxoverxthexDemocratxticketxnoxmatterxwhomxthex
Democratsxchosexforxvice-
president.xThexmarginxofxerrorxwasx4xpercentagexpoints.xTherexarex25,000xregisteredxvotersxinxthexcom
munity.xWhichxrangexofxvaluesxisxlikelyxtoxcontainxthexpopulationxparameter?
A) 13,250xtox15,250 B)x24,400xtox25,600
C)x318xtox366 D)x53%xtox61%
6) Axpollxofx488xcitizensxofxNormal,xIllinois,xshowedxthatx65%xfavoredxstrictxenforcementxofxspeedxlimitsx
withxaxmarginxofxerrorxofx4%.xAxsecondxpollxofx495xcitizensxofxthexsamextownxshowedxthatx34%xfavoredx
strictxenforcementxofxspeedxlimits.xAssumingxthatxproperxsamplingxtechniquesxwerexusedxinxbothxpolls,x
onexmayxconcludexthat
A) thexpercentxofxthexpopulationxthatxfavorsxstrictxenforcementxofxspeedxlimitsxisx49.5%xx8%.
B) thexpercentxofxthexpopulationxthatxfavorsxstrictxenforcementxofxspeedxlimitsxisx49.5%xx4%.
C) onexorxbothxofxthexsamplesxmayxhavexbeenxunlikelyxsamplesxfromxthexpopulation.
D) thexpercentxofxthexpopulationxthatxfavorsxstrictxenforcementxofxspeedxlimitsxisx65%xx8%.
7) Axpollxofx700xattendeesxofxthexTastexofxChicagoxshowedxthatx445xattendees,x65%xofxthexsample,xbeliev
edxthatxthexfoodxwasxoverpriced.xItxisxestimatedxthatx1,250,000xpeoplexattendxthexTaste.xAlthoughx65%x
plusxorxminusx5%xofxattendeesxbelievexthatxthexfoodxisxoverpriced,xthexTastexisxaxpopularxevent.xThexra
wxdataxofxthexstudyxisx(are)
A) 65%xofxthexsample.
B) 700xattendees,x455xattendees.
C) 1,250,000xattendees,x700xattendees,x455xattendees.
D) (60%,x70%)
8) Axstudentxwantedxtoxknowxthexfavoritexlunchxatxaxlargexhighxschoolxwithxaxclosedxcampus.xWhatxisxthe
xfirstxstepxinxconductingxaxstatisticalxstudyxtoxanswerxthexquestion?
A) Selectxaxrandomxsamplexofxstudents.
B) Preciselyxstatexthexgoalxofxthexstudy.
C) Selectxaxrandomxsamplexofxstudentsxandxteachers.
D) Selectxaxrandomxsamplexofxteachers.
1
Copyrightx©x2018xPearsonxEducation,xInc.
