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Atanairport,theweightsofsuitcases(inkg)weremeasured.Theweightsarenormallydistributedwithameanof20 kgandstandarddeviationof3.5 kg. (a)Findtheprobabilitythatasuitcaseweighslessthan15 kg. Anysuitcasethatweighsmorethan k kgisidentifiedasexcessbaggage.19.6%ofthesuitcasesatthisairportareidentifiedasexcessbaggage.(b)Findthevalueofk.[2] (c)Itisknownthat25%ofthesuitcases aremorethan20kgandlessthana kg.Findthevalueofa.[3]
Atanairport,theweightsofsuitcases(inkg)weremeasured.Theweightsarenormallydistributedwithameanof20 kgandstandarddeviationof3.5 kg. (a)Findtheprobabilitythatasuitcaseweighslessthan15 kg.
Anysuitcasethatweighsmorethan k kgisidentifiedasexcessbaggage.19.6%ofthesuitcasesatthisairportareidentifiedasexcessbaggage.(b)Findthevalueofk.[2]
(c)Itisknownthat25%ofthesuitcases aremorethan20kgandlessthana kg.Findthevalueofa.[3]
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