Test Bank Solutions for Elementary Statistics 14th Edition Triola PDF

Title Test Bank Solutions for Elementary Statistics 14th Edition Triola
Author Quality Test
Course Statistics (P)
Institution New York University
Pages 22
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File Type PDF
Total Downloads 116
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Summary

Elementary Statistics 14e 14th Edition by Mario F. Triola. Test Bank, Solutions Manual and PDF Textbook Ebook. ISBN 9780137395477, 0137395477

Full Chapters test bank.

1. Introduction to Statistics
1.1 Statistical and Critical Thinking
1.2 Types of Data
1.3...


Description

Full Chapters >> [email protected] Name___________________________________ MULTI PLECHOI CE.Choos et heoneal t er nat i vet hatbes tc ompl et est hes t at ementorans wer st heques t i on. 1) Thegoodde s i gnofe xpe r i me nt si nc l ude sbl i ndi ng,___ ___ __,and__ ___ ___. 1 ) _____ A) r e pl i c a t i on;r andomi za t i on B) i nt e r nal i za t i on;r a ndomi za t i on C) r e pl i c a t i on;e xpe r i me nt a t i on D) r e pl i c a t i on;vol unt ar yr e s pons es ampl e s 2 ) I de nt i f yt het ypeofobs e r va t i ona ls t udyus e d.At ownobt ai nsc ur r e nte mpl oyme ntda t abypol l i ng10 , 000ofi t sc i t i ze ns t hi smont h. 2 ) _____ A) Pr os pe c t i ve B) Cr os s s e c t i onal C) Re t r os pe c t i ve D) Noneoft he s e 3 ) I de nt i f ywhi c ht ypeofs a mpl i ngi sus e d.At axaudi t ors e l e c t se ve r y100 0t hi nc omet axr e t ur nt ha ti sr e c e i ve d. 3 ) _____ A) Conve ni e nc e B)

Full Chapters >> [email protected] S ys t e ma t i c C) Ra ndom D) Cl us t e r E) St r a t i fie d 4 ) Whi c hoft hef ol l owi ngi sa ni nappr opr i a t ewa yt ode alwi t hmi s s i ngda t a? 4 ) _____ A) De l e t ec as e swi t hmi s s i ngda t a B) I gnor emi s s i ngda t a C) De t e r mi nei fmi s s i ngva l ue sar er a ndom D) Subs t i t ut emi s s i ngva l ue s 5 ) De t e r mi newhi c hoft hef ourl e ve l sofme as ur e me nti smos tappr opr i a t e .Le ve lofs a t i s f a c t i onofs ur ve yr e s ponde nt s . 5 ) _____ A) Or di nal B) Nomi nal C) I nt e r val D) Ra t i o 6 ) De t e r mi newhe t he rt hegi ve nde s c r i pt i onc or r e s pondst oanobs e r va t i onals t udyorane xpe r i me nt .Apol i t i c alpol l s t e r r e por t st ha thi sc a ndi da t ehasa10 %l e adi nt hepol l swi t h10 % unde c i de d.

Full Chapters >> [email protected] 6 ) _____ A) Obs e r va t i ona ls t udy B) Expe r i me nt 7 ) De t e r mi newhe t he rt hegi ve nva l uei sas t a t i s t i corapa r ame t e r .Af t e rt a ki ngt hefir s te xa m,15oft hes t ude nt sdr oppe dt he c l a s s . 7 ) _____ A) St a t i s t i c B) Par a me t e r 8 ) The r ear ema nypot e nt i a lpi t f al l st ha tc anc aus epr obl e mswhe nanal yz i ngda t a .Whi c hoft he s ec hoi c e sar enotc l as s i fie d a sapot e nt i alpi t f al l ? 8 ) _____ A) Or de rofs ur ve yque s t i ons B) Se l f r e por t e dda t a C) Nonr e s pons e D) Me as ur e dda t a 9 ) De t e r mi newhe t he rt hegi ve nva l uei sf r om adi s c r e t eorc ont i nuousda t as e t .Thet i mei tt ake sac omput e rt oc ompl e t ea t as k. 9 )

Full Chapters >> [email protected] _____ A) Di s c r e t e B) Cont i nuous 1 0) Whi c hoft hef ol l owi ngdoe snotappl yt ot her a t i ol e ve lofme as ur e me nt ? 1 0) _____ A) The r ei sana t ur a lz e r os t ar t i ngpoi nt B) Canbear r ange di nor de r C) Di ffe r e nc e sbe t we e nda t ava l ue sc anbef oundandar eme a ni ngf ul D) Cannotbear r ange di nor de r 1 1) At axaudi t ors e l e c t se ve r y100 0t hi nc omet axr e t ur nt ha ti sr e c e i ve d.I de nt i f ywhi c hoft he s et ype sofs ampl i ngi sus e d. 1 1) _____ A) Cl us t e r B) S ys t e ma t i c C) Conve ni e nc e D) St r a t i fie d E) Si mpl eRa ndom 1 2) I de nt i f ywhi c ht ypeofs a mpl i ngi sus e d.Apol l s t e rus e sac omput e rt oge ne r a t e500r andom numbe r s ,t he ni nt e r vi e wst he vot e r sc or r e s pondi ngt ot hos enumbe r s . 1 2)

Full Chapters >> [email protected] _____ A) Conve ni e nc e B) S ys t e ma t i c C) Ra ndom D) St r a t i fie d E) Cl us t e r 1 3) Ane duc a t i one xpe r ti sr e s e ar c hi ngt e ac hi ngme t hodsandwi s he st oi nt e r vi e wt e ac he r sf r om apar t i c ul a rs c hooldi s t r i c t . Sher a ndoml ys e l e c t st e ns c hool sf r om t hedi s t r i c ta ndi nt e r vi e wsal loft het e ac he r sa tt hes e l e c t e ds c hool s .Doe st hi s s a mpl i ngpl anr e s ul ti nar a ndom s ampl e ?Si mpl er a ndom s a mpl e ?Expl a i n. 1 3) _____ A) Ye s ;ye s .Thes ampl ei sr andom be c aus ea l lt e a c he r sha vet hes amec ha nc eofbe i ngs e l e c t e d.I ti sas i mpl er a ndom s a mpl e be c aus eal ls ampl e sha vet hes amec ha nc eofbe i ngs e l e c t e d. B) No;ye s .Thes a mpl ei snotr a ndom be c aus et e ac he r si ns mal ls c hool sar emor el i ke l yt obes e l e c t e dt hant e ac he r si nl a r ge r s c hool s .I ti sas i mpl er a ndom s ampl ebe c aus ea l ls ampl e sha vet hes amec ha nc eofbe i ngs e l e c t e d. C) Ye s ;no.Thes a mpl ei sr a ndom be c aus eal lt e ac he r sha vet hes a mec hanc eofbe i ngs e l e c t e d.I ti snotas i mpl er andom s a mpl ebe c aus es omes ampl e sa r enotpos s i bl e ,s uc hasas ampl et ha ti nc l ude st e a c he r sf r om s c hool st ha twe r enot s e l e c t e d. D) No;no.Thes ampl ei snotr a ndom be c aus et e ac he r si ns mal ls c hool sar emor el i ke l yt obes e l e c t e dt ha nt e ac he r si nl ar ge r s c hool s .I ti snotas i mpl er a ndom s ampl ebe c aus es omes ampl e sar enotpos s i bl e ,s uc ha sas ampl et ha ti nc l ude st e ac he r s f r om s c hool st ha twe r enots e l e c t e d. 1 4) Whi c ht ypeofe xpe r i me nts e par a t e ss ubj e c t si nt ogr oupst ha tar es i mi l arbutdi ffe ri nwa yst ha tmi ghtaffe c tt heout c ome oft hee xpe r i me nt ? 1 4) _____ A) Ma t c he dpai r sde s i gn

Full Chapters >> [email protected] B) Ri gor ous l yc ont r ol l e dde s i gn C) Compl e t e l yr a ndomi ze dde s i gn D) Ra ndomi ze dbl oc kde s i gn 1 5) Amar i j uanas ur ve yi nc l ude d1 610r e s pons e sf r om al i s tofappr oxi ma t e l y2 41, 5 00, 00 0adul t si nt heUni t e dSt a t e sf r om t h whi c he ve r y150 , 000 na mewa ss ur ve ye d.I de nt i f ywhi c hoft he s et ype sofs ampl i ngi sus e d: 1 5) _____ A) S ys t e ma t i c B) Conve ni e nc e C) Si mpl er a ndom D) St r a t i fie d E) Cl us t e r 1 6) Aps yc hol ogys t ude ntwi s he st oi nve s t i ga t edi ffe r e nc e si npol i t i c alopi ni onsbe t we e nbus i ne s sma j or sa ndpol i t i c als c i e nc e ma j or sa the rc ol l e ge .Sher andoml ys e l e c t s100s t ude nt sf r om t he26 0bus i ne s sma j or sa nd100s t ude nt sf r om t he180 pol i t i c a ls c i e nc ema j or s .Doe st hi ss ampl i ngpl a nr e s ul ti nar a ndom s ampl e ?Si mpl er a ndom s ampl e ?Expl ai n. 1 6) _____ A) Ye s ;no.Thes a mpl ei sr a ndom be c aus eal ls t ude nt sha vet hes amec ha nc eofbe i ngs e l e c t e d.I ti snotas i mpl er andom s a mpl ebe c aus es omes ampl e sa r enotpos s i bl e ,s uc hasas ampl ec ons i s t i ngof50bus i ne s sma j or sa nd150pol i t i c als c i e nc e ma j or s . B) No;ye s .Thes a mpl ei snotr andom be c aus epol i t i c als c i e nc ema j or sha veagr e a t e rc hanc eofbe i ngs e l e c t e dt hanbus i ne s s ma j or s .I ti sas i mpl er a ndom s ampl ebe c aus ea l ls ampl e sofs i z e200ha vet hes amec ha nc eofbe i ngs e l e c t e d. C) No;no.Thes ampl ei snotr andom be c aus epol i t i c a ls c i e nc ema j or sha veagr e a t e rc hanc eofbe i ngs e l e c t e dt hanbus i ne s s ma j or s .I ti snotas i mpl er a ndom s ampl ebe c aus es omes ampl e sar enotpos s i bl e ,s uc ha sas ampl ec ons i s t i ngof5 0

Full Chapters >> [email protected] bus i ne s sma j or sand1 50pol i t i c a ls c i e nc ema j or s . D) Ye s ;ye s .Thes ampl ei sr andom be c aus ea l ls t ude nt sha vet hes amec hanc eofbe i ngs e l e c t e d.I ti sas i mpl er andom s ampl e be c aus eal ls ampl e sofs i ze2 00ha vet hes amec ha nc eofbe i ngs e l e c t e d. 1 7) I de nt i f yt het ypeofs t udyus e d.At ownobt ai nsc ur r e nte mpl oyme ntda t abypol l i ng10 , 000ofi t sc i t i z e nst hi smont h. 1 7) _____ A) Pr os pe c t i ve B) Cr os s s e c t i onal C) Re t r os pe c t i ve D) Noneoft he s e 1 8) Re s e ar c he r sc ol l e c tda t abyi nt e r vi e wi nga t hl e t e swhoha vewonOl ympi cgol dme dal sf r om 19 92t o2 016 .I de nt i f yt het ype ofs t udy . 1 8) _____ A) Pr os pe c t i ve B) Cr os s s e c t i onal C) Re t r os pe c t i ve D) Noneoft he s e 1 9) Onat e s t ,74 % oft heque s t i onsa r eans wer e dc or r e c t l y .I f11 1que s t i onsa r ec or r e c t ,how manyque s t i onsar eont het e s t ? 1 9) _____

Full Chapters >> [email protected] A) 1 50que s t i ons B) 6 7que s t i ons C) 8 2que s t i ons D) 3 7que s t i ons 2 0) I de nt i f ywhi c ht ypeofs a mpl i ngi sus e d.Ar e s e ar c ht e am want st os t udyt hede mogr a phi c sofc ol l e ges t ude nt si nt he Uni t e dSt a t e sus i ngpr opor t i ona t es a mpl e sofs t ude nt si nma j or sr e fle c t i ngac t ua lU. S.pe r c e nt a ge s . 2 0) _____ A) Si mpl er a ndom B) Conve ni e nc e C) St r a t i fie d D) Cl us t e r E) S ys t e ma t i c 2 1) I de nt i f ywhi c ht ypeofs a mpl i ngi sus e d.Toa voi dwor ki ngl a t e ,aqual i t yc ont r olanal ys ts i mpl yi ns pe c t st hefir s t100i t e ms pr oduc e di nada y . 2 1) _____ A) Cl us t e r B) St r a t i fie d C) Conve ni e nc e D)

Full Chapters >> [email protected] S ys t e ma t i c E) Si mpl eRa ndom 2 2) De t e r mi newhe t he rt hegi ve nva l uei sadi s c r e t eorc ont i nuousva r i abl e .Pe opl ea r eas ke dt os t a t ehow manyt i me si nt he l as tmont ht he yvi s i t e dt he i rf ami l ydoc t or . 2 2) _____ A) Cont i nuous B) Di s c r e t e 2 3) Cor r e l a t i ondoe snoti mpl y__ ___ ___ . 2 3) _____ A) l i ne a r i t y B) bi as C) s i gni fic a nc e D) c aus a t i on 2 4) De t e r mi newhe t he rt hegi ve nva l uei sas t a t i s t i corapa r ame t e r .Thi r t ype r c e ntofal ldogowne r spoops c oopa f t e rt he i r dog. 2 4) _____ A) St a t i s t i c B)

Full Chapters >> [email protected] Par a me t e r 2 5) De t e r mi newhe t he rt hegi ve nde s c r i pt i onc or r e s pondst oane xpe r i me ntora nobs e r va t i onals t udy .As t oc ka nal ys ts e l e c t sa s t oc kf r om agr oupoft we nt yf ori nve s t me ntbyc hoos i ngt hes t oc kwi t ht hegr e a t e s te ar ni ngspe rs har er e por t e df ort he l as tqua r t e r . 2 5) _____ A) Expe r i me nt B) Obs e r va t i ona ls t udy 2 6) De t e r mi newhe t he rt hegi ve nde s c r i pt i onc or r e s pondst oanobs e r va t i onals t udyorane xpe r i me nt .Adoc t orgi ve sane w me di c a t i ont ohal fofhi spa t i e nt swi t ht hefluandapl a c e bot ot heot he rhal fofhi spa t i e nt swi t ht heflu. 2 6) _____ A) Expe r i me nt B) Obs e r va t i ona ls t udy 2 7) Amar ke t i ngfir m doe sas ur ve yt ofindouthow manype opl eus eapr oduc t .Oft heonehundr e dpe opl ec ont a c t e d,fif t e e n s a i dt he yus et hepr oduc t .I de nt i f yt het ypeofs t udyus e d. 2 7) _____ A) Obs e r va t i ona ls t udy B) Expe r i me nt 2 8) Aga r de ne rhas75c l i e nt s ,4 5% ofwhom ar ebus i ne s s e s .Fi ndt henumbe rofbus i ne s sc l i e nt s . 2 8) _____

Full Chapters >> [email protected] A) 7 3c l i e nt s B) 3 6c l i e nt s C) 3 4c l i e nt s D) 4 1c l i e nt s 2 9) A_ ___ ____i st hec ompl e t ec ol l e c t i onofal lme as ur e me nt sorda t ac ol l e c t e d,whe r e a s ,a_ ___ ____i sas ubc ol l e c t i onof me mbe r ss e l e c t e df r om t hec ompl e t ec ol l e c t i on. 2 9) _____ A) popul a t i on;s a mpl e B) popul a t i on;par ame t e r C) s a mpl e ;c e ns us D) s a mpl e ;popul a t i on 3 0) Amana ge me nts ur ve yf orac ompa nys ur ve ye d235e mpl oye e s .44 . 7% oft hee mpl oye e ss ur ve ye dwe r ef e ma l e s .The numbe rofma l e swoul dbe__ ____ __. 3 0) _____ A) 1 3 B) 1 30 C) 1 05

Full Chapters >> [email protected] D) Una bl et ode t e r mi ne 3 1) De t e r mi newhi c hl e ve lofme as ur e me nti sappr opr i a t e .Sal ar i e sofc ol l e gepr of e s s or s . 3 1) _____ A) Ra t i o B) Or di nal C) I nt e r val D) Nomi na l 3 2) De t e r mi newhi c hoft hef ourl e ve l sofme as ur e me nti smos tappr opr i a t e .St ude nt s 'gr a de sofA,B,orC,onat e s t . 3 2) _____ A) I nt e r val B) Or di nal C) Nomi na l D) Ra t i o 3 3) A_ ___ ____i st hec ol l e c t i onofda t af r om e ve r yme mbe roft hepopul a t i on. 3 3) _____ A)

Full Chapters >> [email protected] s t a t i s t i c B) c e ns us C) s a mpl e D) pl a c e bo 3 4) De t e r mi newhi c hl e ve lofme as ur e me nti sappr opr i a t e .As a mpl eofc hi l dr e n' sbal l sar ec l as s i fie df r om s of t e s tt ohar de s t . 3 4) _____ A) Nomi na l B) I nt e r val C) Or di nal D) Ra t i o 3 5) Wha tt ypeofda t aval ue sar equa nt i t a t i veandt henumbe rofval ue si sfini t eorc ount abl e ? 3 5) _____ A) Di s c r e t e B) Ca t e gor i c a l C) Cont i nuous D)

Full Chapters >> [email protected] I nt e r val 3 6) De t e r mi newhi c hoft hef ourl e ve l sofme as ur e me nti smos tappr opr i a t e .St ude nt s ' gr a de s ,A,B,orC,onat e s t . 3 6) _____ A) Or di nal B) I nt e r val C) Nomi na l D) Ra t i o 3 7) Thef ourl e ve l sofme as ur e me ntt ha tar ec ommonl yus e df orc l a s s i f yi ngda t aar er a t i o ,___ ____ _,__ ___ ___, and____ ___ _. 3 7) _____ A) nomi nal ;or di na l ;i nt e r va l B) nor ma l ;or di na l ;i nt e r va l C) i nt e r val ;nor mal ;or di nar y D) nomi nal ;or di na l ;c a t e gor i c a l 3 8) I de nt i f ywhi c ht ypeofs a mpl i ngi sus e d.Thenameofe a c hc ont e s t anti swr i t t e nonas e pa r a t ec ar d,t hec a r dsar epl ac e di n aba g,andt hr e ename sar epi c ke df r om t heba g. 3 8) _____ A) St r a t i fie d

Full Chapters >> [email protected] B) Conve ni e nc e C) Si mpl eRa ndom D) S ys t e ma t i c E) Cl us t e r 3 9) Thes i mi l ar i t ybe t we e nanor di nall e ve lofme a s ur e me nta ndani nt e r va ll e ve lofme as ur e me nti st ha t____ ___ _. 3 9) _____ A) di ffe r e nc e sbe t we e nda t ava l ue sc anbede t e r mi ne dandar eme ani ngf ul B) di ffe r e nc e sbe t we e nda t ava l ue sc annotbede t e r mi ne dora r eme a ni ngl e s s C) ne i t he rc anbea r r a nge di ns omeor de r D) bot hc anbear r ange di ns omeor de r 4 0) I nac r os s s e c t i onals t udy ,da t aar e___ ___ __. 4 0) _____ A) c ol l e c t e di nt hef ut ur ef r om gr oupst ha ts har ec ommonf ac t or s B) obs e r ve d,me as ur e ,andc ol l e c t e dove rape r i odoft i me C) c ol l e c t e df r om apas tt i mepe r i od D) obs e r ve d,me as ur e d,andc ol l e c t e da tonepoi ntoft i me ESSAY.Wr i t eyourans weri nt hes pa c epr ovi dedoronas epa r a t es heetofpape r . 4 1) Gi ve nt heda t ai nt het abl e ,wha ti s s uec a nbeaddr e s s e dbyc onduc t i ngas t a t i s t i c a la nal ys i soft heval ue s ?

Full Chapters >> [email protected] Amount sofSat ur a t edFat( i ngr ams )i nTwo-Once Regular and Low-Fat Muffins Regular Low-Fat

4 . 5 1. 2

3 . 5 2 . 1

3. 7 2. 2

5. 2 1. 8

4 . 9 1. 6

3. 9 2. 2

4 2) Expl ai nwha ti sme a ntbyt het e r m" c onf oundi ng, "andgi veane xa mpl eofa ne xpe r i me nti nwhi c hc onf oundi ngi sl i ke l yt o beapr obl e m. 4 3) Al a wye rs ur ve ye das i mpl er andom s ampl eofhi sc ol l e a gue sandas ke dt he m whe t he rt he ywe r el e f t hande dorr i ght ha nde d.I st hi sc onve ni e nc es ampl el i ke l yt opr ovi der e s ul t st ypi c a lofal ladul t si nt heUni t e dSt a t e s ?Doc onve ni e nc e s a mpl e si nge ne r a lpr ovi degoodr e s ul t s ? 4 4) Ac oac hus e sane wt e c hni quei nt r ai ni ngmi ddl edi s t anc er unne r s .Thet i me s , i ns e c onds ,f or8di ffe r e nta t hl e t e st or un8 00 me t e r sbe f or eandaf t e rt hi st r a i ni ngar es hownbe l ow. At hl e t e A Bef or e 115 . 2 Af t e r 112. 9

B 1 14 112 . 7

C 1 16. 4 1 14

D 1 19. 8 1 20. 6

E 11 0. 9 1 09. 1

F 11 2. 4 10 9. 1

G 11 1. 5 10 7. 9

H 117 . 3 11 3. 4

Doe st hec onc l us i ont ha tt het e c hni quei se ffe c t i veappe art obes uppor t e dwi t hs t a t i s t i c a ls i gni fic anc e ?Doe st he c onc l us i ont ha tt het e c hni quei se ffe c t i vea ppe a rt oha vepr a c t i c als i gni fic anc e ? 4 5) Subs c r i be r soft hewome n' sma gaz i neCos mopol i t anar eas ke dt opa r t i c i pa t ei nas ur ve yaboutpr e f e r r e dc e r e a l sf or br e akf as t .Ar et her e s ul t sl i ke l yt ober e pr e s e nt a t i veofal lwome n?Ofal ls ubs c r i be r sofCos mopol i t an?Whyorwhynot ? 4 6) Atas c hoolt he r ear et wodi ffe r e ntma t hc l as s e sf orc hi l dr e noft hes amea ge . Thet woc l as s e sha vedi ffe r e ntt e ac he r s .The s c hoolpr i nc i pa li si nt e r e s t e di nga ugi ngt hee ffe c t i ve ne s soft wodi ffe r e ntt e ac hi ngme t hodsandas kse ac ht e a c he rt ot r y oneoft heme t hods .Att hee ndoft hes e me s t e rbot hc l as s e sar egi ve nt hes amet e s tandt her e s ul t sar ec ompar e d.I nt hi s e xpe r i me nt ,wha ti st hevar i a bl eofi nt e r e s t ?Gi ves omee xa mpl e sofvar i abl e swhi c hc oul dbec onf oundi ngva r i abl e s . 4 7) For m ac onc l us i onabouts t a t i s t i c a ls i gni fic anc e . Donotma keanyf or ma lc a l c ul a t i ons .Ei t he rus et her e s ul t spr ovi de dor makes ubj e c t i vej udgme nt saboutt her e s ul t s . La s tye a r ,t hea ve r a gema t hS ATs c or ef ors t ude nt sa tones c hoolwas47 5.Thehe a dma s t e ri nt r oduc e dne wt e ac hi ng me t hodshopi ngt oi mpr oves c or e s .Thi sye ar ,t heme anma t hS ATs c or ef oras ampl eofs t ude nt swas48 1.I st he r e s t a t i s t i c al l ys i gni fic a nte vi de nc et ha tt hene wt e ac hi ngme t hodi se ffe c t i ve ?I ft het e a c hi ngme t hodhadnoe ffe c t ,t he r e woul dber oughl ya3i n10c ha nc eofs e e i ngs uc ha ni nc r e as e .Doe st her e s ul tha ves t a t i s t i c als i gni fic anc e ?Whyorwhy not ?Doe st her e s ul tha vepr ac t i c a ls i gni fic anc e ? 4 8) Woul danobs e r va t i ona ls t udyora ne xpe r i me ntbemor eappr opr i a t et oi nve s t i ga t et hee ffe c t sonhumansofas ubs t anc e knownt obet oxi c ?Expl ai n. 4 9)

Full Chapters >> [email protected] Expl ai nwhyus i ngs e l f r e por t e dda t ai ns t e a dofme as ur e dda t ai sapot e nt i alpi t f al li nda t ac ol l e c t i on.Bes ur et oi nc l udean e xampl e . 5 0) Di s t i ngui s hbe t we e nc a t e gor i c alandquant i t a t i veda t a .Gi vea ne xampl eofe ac h. 5 1) " 3 8 % ofadul t si nt heUni t e dSt a t e sr e gul a r l yvi s i tadoc t or " .Thi sc onc l us i onwasr e ac he dbyac ol l e ges t ude nta f t e rs hehad que s t i one d520r andoml ys e l e c t e dme mbe r sofhe rc ol l e ge .Wha ti swr ongwi t hhe rc onc l us i on? 5 2) I de nt i f yt hes ampl ea ndpopul a t i on.Al s o,de t e r mi newhe t he rt hes ampl ei sl i ke l yt ober e pr e s e nt a t i veoft hepopul a t i on.A s t udyi si nt e r e s t e di nwhe t he rme nandwome na r ee qual l yl i ke l yt ovot eDe moc r a t i c ,Re publ i c anorI nde pe nde ntornot vot ei napr e s i de nt i ale l e c t i on.Re s ul t swe r epol l e dt hr oughapopul arne wswe bs i t e . 5 3) Woul danobs e r va t i ona ls t udyora ne xpe r i me ntbemor eappr opr i a t et oi nve s t i ga t et hee ffe c t sonf e r t i l i ze ronpl ant gr owt h?Expl a i n. 5 4) I de nt i f yt hes ampl ea ndpopul a t i on.Al s o,de t e r mi newhe t he rt hes ampl ei sl i ke l yt ober e pr e s e nt a t i veoft hepopul a t i on. Ane mpl oye ea tt hel oc a li c ec r e am par l oras kst hr e ec us t ome r si ft he yl i kec hoc ol a t ei c ec r e a m. 5 5) Expl ai nt hedi ffe r e nc ebe t we e ns t r a t i fie da ndc l us t e rs ampl i ng. 5 6) Whydoyout hi nkt ha tc l us t e rs ampl i ngi sf r e que nt l yus e di npr a c t i c e ? 5 7) Whyi sc l us t e rs ampl i ngf r e que nt l yus e di npr a c t i c e ? 5 8) Thet abl es howst hewe i ght s( i npounds )andmont hl yi nc ome s( i ndol l ar s )ofni ner a ndoml ys e l e c t e dwome nbe t we e nt he a ge sof1 8and65 . We i ght( l b)113 1 32 15 5 122 16 6 140 1 18 12 9 1 85 Mont hl yI nc ome ( dol l ar s )1 420 3 650 54 75 23 10 47 10 291 0 172 0 246 0 4 115 I fweus es t a t i s t i c a lme t hodst oc onc l udet ha tt he r ei sac or r e l a t i on( orr e l a t i ons hi poras s oc i a t i on)be t we e nt hewe i ght sof wome nandt he i rmont hl yi nc ome s ,c anwec onc l udet ha tbyi nc r e as i nghe rwe i ghtawoma nc ani nc r e as ehe rmont hl y i nc ome ? 5 9) At e a c he rwasi nt e r e s t e di nknowi nghow muc ht axpe opl epa yi nt heUni t e dSt a t e s .Shes e l e c t e das i mpl er a ndom s ampl e ofhe rf r i e ndsanda s ke dt he m aboutt he i rt ax e s ....


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