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Unformatted text preview: 17.2.2 A component has an exponential failure time distribution with a mean time to failure of
MTTF := 35_day (a) What is the probability that the component is still operating after t 35 := 35_day InverseDay := 1 _day := 1 MTTF
InverseDay = .028571inverseday r t := e t r t 35 = .367879 (b) What is the probability that the component fails within t 40 := 40_day F t 40 := 1  r t 40 F t 40 = .681093 = "Done" (c) If
n := 6 of these components are placed in series, what is the probability that the system is still operating after t 5 := 5_day r_series t := r t r_series t 5 n = .424373 ...
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 Spring '07
 JosephGeunes

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