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Exam: 250712RR - Probability

This solved exam provides detailed answers related to probability theory and statistical calculations.

Mia Martinez
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StudentID:22039100Exam:250712RR-ProbabilityWhenyouhavecompletedyourexamandreviewedyouranswers,clickSubmitExam.AnswerswillnotberecordeduntilyouhitSubmitExam.Ifyouneedtoexitbeforecompletingtheexam,clickCancelExam.Questions1to20:Selectthebestanswertoeachquestion.Notethataquestionanditsanswersmaybesplitacrossapagebreak,sobesurethatyouhaveseentheentirequestionandalltheanswersbeforechoosingananswer.1.Approximately how much of the total area under the normal curve will be in the interval spanning 2standard deviations on either side of themean?A.68.3%B.99.7%C.50%D.95.5%2.Usingthestandardnormaltableinthetextbook,determinethesolutionforP(0.00≤z≤2.01).A.0.0222B.0.4778C.0.4821D.0.11793.The probability of an offender having a speeding ticket is 35%, having a parking ticket is 44%, havingboth is 12%. What is the probability of an offender having either aspeeding ticket or a parking ticket orboth?A.79%B.91%C.67%D.55%4.Ifthemeannumberofhoursoftelevisionwatchedbyteenagersperweekis12withastandarddeviationof 2 hours, what proportion of teenagers watch 16 to 18 hours of TV aweek? (Assume a normaldistribution.)A.2.1%B.4.2%C.4.5%D.0.3%5.Each football game begins with a coin toss in the presence of the captains from the two opposingteams.(The winner of the toss has the choice of goals or of kicking or receiving the first kickoff.) A particularfootball team is scheduled to play 10 games this season. Letx= the number of coin tosses that the teamcaptainwinsduringtheseason.Usingtheappropriatetableinyourtextbook,solveforP(4≤x≤8).A.0.246

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Statistics

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