Statistics for Managers Using Microsoft Excel 7E - Levine - SM levine_smume7_ism_04

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1、SolutionstoEnd-of-SectionandChapterReviewProblems175CHAPTER44.1(a)Simpleeventsincludetossingaheadortossingatail.(b)Jointeventsincludetossingtwoheads(HH),aheadfollowedbyatail(HT),atailfollowedbyahead(TH),andtwotails(TT).(c)Tossingatailonthefirsttoss(d)Thesamplespacei

2、sthecollectionof(HH),(HT),(TH)and(TT).4.2(a)Simpleeventsincludeselectingaredball.(b)Selectingawhiteball(c)Thesamplespaceisthecollectionof“aredballbeingselected”and“awhiteballbeingselected”.4.3(a)30/90=1/3=0.33(b)60/90=2/3=0.67(c)10/90=1/9=0.11(d)4.4(a)60/100=3/5=0.6

3、(b)10/100=1/10=0.1(c)35/100=7/20=0.35(d)4.5(a)Apriori(b)Subjective(c)Apriori(d)Empirical4.6(a)Mutuallyexclusive,notcollectivelyexhaustive.(b)Notmutuallyexclusive,notcollectivelyexhaustive.(c)Mutuallyexclusive,notcollectivelyexhaustive.(d)Mutuallyexclusive,collective

4、lyexhaustive4.7(a)Thejointprobabilityofmutuallyexclusiveevents(beinglistedontheNewYorkStockExchangeandNASDAQ)iszero.(b)Thejointprobabilityoftheevents(owningasmartphoneandatablet)isnotzerobecauseaconsumercanownbothasmartphoneandatabletatthesametime.(c)Thejointprobabi

5、lityofmutuallyexclusiveevents(beingaMotorolacellphoneandaSamsungcellphone)iszero.(d)Thejointprobabilityoftheevents(anautomobilethatisaToyotaandwasmanufacturedintheU.S)isnotzerobecauseaToyotacanbemanufacturedintheU.S.4.8(a)Needsthreeormoreclickstoberemovedfromanemail

6、list.(b)Needsthreeormoreclickstoberemovedfromanemaillistin2009.(c)Doesnotneedthreeormoreclickstoberemovedfromanemaillist.(d)“Needsthreeormoreclickstoberemovedfromanemaillistin2009”isajointeventbecauseitconsistsoftwocharacteristics.Copyright©2014PearsonEducation,Inc.

7、SolutionstoEnd-of-SectionandChapterReviewProblems1754.9(a)P(youneedthreeormoreclickstoberemovedfromanemaillist)=(39+7)/200=0.23(b)P(youneededthreeormoreclickstoberemovedfromanemaillistin2009)=39/200=0.195(c)P(youneededthreeormoreclickstoberemovedfromanemaillistorwas

8、anonlineretailersurveyedin2009)=(46+100-39)/200=0.535(d)Theprobabilityof“youneededthreeormoreclickstoberemovedfromanemaillistorattemptedto