Question
Assumethatasimplerandomsamplehasbeenselectedfromanormallydistributedpopulationandtestthegivenclaim.UseeitherthetraditionalmethodorP-valuemethodasindicated.Identifythenullandalternativehypotheses,teststatistic,criticalvalue(s)orP-value(orrangeofP-values)asappropriate andstatethefinalconclusionthataddressestheoriginalclaim. Aresearcherwantstotesttheclaimthatconvictedburglarsspendanaverageof18.7 monthsinjail.Shetakesarandomsampleof11suchcasesfromcourtfilesandfindsthatx =20.6monthsands=7.8months.Testtheclaimthat=18.7monthsatthe0.05significancelevel.Usethetraditionalmethod oftestinghypotheses
Assumethatasimplerandomsamplehasbeenselectedfromanormallydistributedpopulationandtestthegivenclaim.UseeitherthetraditionalmethodorP-valuemethodasindicated.Identifythenullandalternativehypotheses,teststatistic,criticalvalue(s)orP-value(orrangeofP-values)asappropriate andstatethefinalconclusionthataddressestheoriginalclaim.
Aresearcherwantstotesttheclaimthatconvictedburglarsspendanaverageof18.7 monthsinjail.Shetakesarandomsampleof11suchcasesfromcourtfilesandfindsthatx
=20.6monthsands=7.8months.Testtheclaimthat=18.7monthsatthe0.05significancelevel.Usethetraditionalmethod oftestinghypotheses
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