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OpenStudy (anonymous):
A device contains two electronic parts. Part 1 has a lifetime in years given by the random variable Y1, with density e^-t for t>0. Part 2 has a lifetime Y2 with density 2e^-2t for t >0. a. Find p(Y1>1.0) and P(Y2>1.0) b. What is the probability that exactly one part is functioning at t=one year? Assume Y1 and Y2 are independent.
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