Question: answer A garage door opener has three sections, which have reliabilities of .9, .8, and .9. The lowest of these has an identical backup which

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A garage door opener has three sections, which have reliabilities of .9, .8, and .9. The lowest of these has an identical backup which automatically goes 41 on if the original fails. All three parts must operate to perform its intended function. The system reliability is closest to: R,=1-(1p)(1-p)(1-py)...(1-p,) Rs = (pl)(pi')(pi) . (pn)

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