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Test Bank for essential statistics 3rd edition robert
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Test Bank for essential statistics 3rd edition robert
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TEST BANK,MULTIPLE CHOICE.
Choose the one alternative that best completes the statement or answers the question.
Solve the problem.
1) In a sample of 775 senior citizens, approximately 67% said that 1)
they had seen a television commercial for life insurance. About
how many senior citizens is this?
A) Not enough information available. B) 519
C) 67 D) 256
Answer: B
2) A two-way table could be used for which of the following pairs of variables? 2)
A) Gender and age B) Age and favorite class
C) Gender and favorite class D) Age and
height Answer: C
Indicate whether the study described is an observational study or a controlled
experiment. 3)
3) "People with diabetes are at higher risk for certain cancers than those
without the blood sugar disease, suggests a new study based on a
telephone survey of nearly 400,000 adults."
A) Controlled experiment B) Observational
study Answer: B
SHORT ANSWER. Write the word or phrase that best completes each statement or
answers the question.
Answer the question.
4) The number of clinically obese men in State A is 156,261 and the 4)
number of clinically obese men in State B is 294,269. Someone
makes the claim that this is evidence that men exercise more in State
A. What information is missing that might contradict this claim?
Answer: We need to know the total number of men in State A and
State B so that a comparison can be made of the percentage of
the men in each state that are clinically obese. There could be a
much higher male population in State B than State A. Also,
assumptions about exercise and obesity are being made.
1
,MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Use the idata iin iTable i1A ito ianswer ithe iquestion.
Note: i1 iis ifemale, i0 iis imale.
5) Suppose iyou iwanted ito iknow iwhether ithe istudent's icommute idistance 5) i
iwas iassociated iwith ithe istudent's i living isituation. i Using i the i data
itable iif i possible, iwhich ivariables i would iyou i use?
A) Use iCommute iDistance i(Miles) iand iLiving iSituation.
B) Data ion istudent's iliving isituation iare inot iincluded iin ithis istudy.
C) Use iCommute iDistance i(Miles) iand iCollege iUnits iAcquired.
D) Use iCollege iUnits iAcquired iand
iLiving iSituation. iAnswer: i A
In ia istudy iof i1350 ielementary ischool ichildren, i118 iout i of ithe i615 igirls iin ithe istudy
isaid ithey iwant ito ibe ia iteacher i when ithey igrow iup.
6) What ipercent iof igirls iwant ito ibe ia iteacher iwhen ithey igrow iup? 6)
A) 45.6% B) i80.8% C) i8.7% D) i19.2%
Answer: iD
Determine iif ithe ifollowing iscenario iis ian iobservational istudy ior ia icontrolled 8) T
iexperiment.
h
7) A idoctor iis iinterested iin idetermining iwhether ia icertain imedication
e
iincreases ithe irisk iof ihigh iblood ipressure. iHe irandomly iselects i100 ipeople
i
ifor ihis istudy i- i50 iwho iwill itake ithe imedication, iand i50 iwho i will itake i a
iplacebo. i He ichecks ithe i patients' i blood i pressures i weekly ifor i six
n
i months.
u
A) Observational istudy B) iNeither C) iControlled
m
b
iexperiment iAnswer: i C
e
Solve ithe iproblem. r
i
2
, MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
of iparents iwho iattended iparent iteacher iconferences iat ia ilocal ielementary
ischool iis ian iexample iof iwhat itype iof ivariable?
7) i
A) Numerical ivariable B) iCategorical ivariable C)
iNeither iAnswer: i A
8) i
3
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