Test Bank for Statistical Reasoning for Everyday Life, 6th Edition by Jeff Bennett.pdf

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%xx8%.
B) thexpercentxofxthexpopulationxthatxfavorsxstrictxenforcementxofxspeedxlimitsxisx49.5%xx4%.
C) onexorxbothxofxthexsamplesxmayxhavexbeenxunlikelyxsamplesxfromxthexpopulation.
D) thexpercentxofxthexpopulationxthatxfavorsxstrictxenforcementxofxspeedxlimitsxisx65%xx8%.
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.


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