Essential Statistics, 3rd Edition — Gould, Ryan & Wong — Test Bank (Complete Exam & Practice Question Set

TEST BANK x xx




x x




EssentialxStatisticsx3rx 1x

, FULL TEST BANK!!! x x x



Examx
x

Namex xx
x
x

MULTIPLExCHOICE.xChoosexthexonexalternativexthatxbestxcompletesxthexstatementxorxanswersxthexquestion.x
x

Solvexthexproblem.x
1)xInxaxsamplexofx775xseniorxcitizens,xapproximatelyx67%xsaidxthatxtheyxhadxseenxaxtelevisionx1)xxx
xxcommercialxforxlifexinsurance.xAboutxhowxmanyxseniorxcitizensxisxthis?x


A)xNotxenoughxinformationxavailable.x B)x519x
C)x67x D)x256x
Answer:xBx
x


x
2) A two-way table could be used for which of the following pairs of variables?
x x x x x x x x x x x x x x


2)xxxx x

A)xGenderxandxagex B)xAgexandxfavoritexclassx
C)xGenderxandxfavoritexclassx D)xAgexandxheightx
Answer:xCx

Indicatexwhetherxthexstudyxdescribedxisxanxobservationalxstudyxorxaxcontrolledxexperiment.x
3) "Peoplexwithxdiabetesxarexatxhigherxriskxforxcertainxcancersxthanxthosexwithoutxthexbloodxsugarx3)xxxxxdisease,xsug
gestsxaxnewxstudyxbasedxonxaxtelephonexsurveyxofxnearlyx400,000xadults."x
A) Controlledxexperimentx B)xObservationalxstudyx
Answer:xBx


SHORTxANSWER.xWritexthexwordxorxphrasexthatxbestxcompletesxeachxstatementxorxanswersxthexquestion.x

Answerxthexquestion.x
4) ThexnumberxofxclinicallyxobesexmenxinxStatexAxisx156,261xandxthexnumberxofxclinicallyxobesex4)xxxxxmenxinxStatexBxi
sx294,269.xSomeonexmakesxthexclaimxthatxthisxisxevidencexthatxmenxexercisexmorexinxStatexA.xWhatxinformationxisx
missingxthatxmightxcontradictxthisxclaim?x
Answer:xWexneedxtoxknowxthextotalxnumberxofxmenxinxStatexAxandxStatexBxsoxthatxaxcomparison
xcanxbexmadexofxthexpercentagexofxthexmenxinxeachxstatexthatxarexclinicallyxobese.xThere

xcouldxbexaxmuchxhigherxmalexpopulationxinxStatexBxthanxStatexA.xAlso,xassumptionsxa

boutxexercisexandxobesityxarexbeingxmade.x
x

MULTIPLExCHOICE.xChoosexthexonexalternativexthatxbestxcompletesxthexstatementxorxanswersxthexquestion.x

UsexthexdataxinxTablex1Axtoxanswerxthexquestion.x
x




EssentialxStatisticsx3rx 2x

, Note:x1xisxfemale,x0xisxmale.x
x


5) Supposexyouxwantedxtoxknowxwhetherxthexstudent'sxcommutexdistancexwasxassociatedxwithxthex5)xxx
xxstudent'sxlivingxsituation.xUsingxthexdataxtablexifxpossible,xwhichxvariablesxwouldxyouxuse?xA)xUsexCommutex

Distancex(Miles)xandxLivingxSituation.x
B) Dataxonxstudent'sxlivingxsituationxarexnotxincludedxinxthisxstudy.x
C) UsexCommutexDistancex(Miles)xandxCollegexUnitsxAcquired.x
D) UsexCollegexUnitsxAcquiredxandxLivingxSituation.xAnswer:xAx


Inxaxstudyxofx1350xelementaryxschoolxchildren,x118xoutxofxthex615xgirlsxinxthexstudyxsaidxtheyxwantxtoxbexaxteacherxwhenxt
heyxgrowxup.x
x
6)xWhatxpercentxofxgirlsxwantxtoxbexaxteacherxwhenxtheyxgrowxup?x 6)x x


A)x45.6%x B)x80.8%x C)x8.7%x D)x19.2%x
Answer:xDx
x

Determinexifxthexfollowingxscenarioxisxanxobservationalxstudyxorxaxcontrolledxexperiment.x
7) Axdoctorxisxinterestedxinxdeterminingxwhetherxaxcertainxmedicationxincreasesxthexriskxofxhighxbloodx7)xxxxx
pressure.xHexrandomlyxselectsx100xpeoplexforxhisxstudyx-
x50xwhoxwillxtakexthexmedication,xandx50xxwhoxwillxtakexaxplacebo.xHexchecksxthexpatients'xbloodxpressure

sxweeklyxforxsixxmonths.x

A)xObservationalxstudyx B)xNeitherx C)xControlledxexperimentx x




x
8) The xnumber xof xparents xwho xattended xparent xteacher xconferences xatxaxlocal xelementary xschool xis xan x
Answer:xCx x
x

Solvexthexproblem.x
8) examplexofxwhatxtypexofxvariable?x
A)xNumericalxvariablex B)xCategoricalxvariablex C)xNeitherx
Answer:xAx




EssentialxStatisticsx3rx 3x

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