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A time-terminated life testing plan is desired that will accept lots with a mean life of 400 hours with a probability of 0.
Atime-‐terminatedlifetestingplanisdesiredthatwillacceptlotswithameanlifeof400hourswithaprobabilityof0.99andwillacceptlotswithameanlifeof200hoursprobabilityof0.05.Thetestshouldbeterminatedby80hours.a) UsingHandbookH-‐108,determinetheplanassumingthetimetofailureisexponential.Itemsthatfailwillbereplacedimmediately.b) Nowassumethatfaileditemsarenotreplacedduringthetest.UsingHandbookH-‐108,determinetheplanassumingthetimetofailureisexponential.