HW_6_due_Fri_10.28_

6minutefindthe

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Unformatted text preview: didateswillpassthetest? (b) Ifthetop5%ofthecandidatesaretobegivenacertificateofcommendation,how fastmustacandidatecompletethetesttobeeligibleforacertificate?  5. Arandomsampleofsize2willbeselected,withreplacement,fromthesetofnumbers {2,4,6}. (a) Listallpossiblesamplesandevaluate ands2foreach. (b) Determinethesamplingdistributionof ands2.  Homework 6 October 28, 2011 6. Thetimethatcustomerstaketocompletetheirtransactionatamoneymachineisa randomvariablewithmean=2minutesandstandarddeviation=0.6minute.Findthe probabilitythatarandomsampleof50customerswilltakebetween90and112.5 minutestocompletealltheirtransactions.Thatis,findtheprobabilitythat willbe between1.8and2.25minutes....
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