Exam P:Probability機率題庫下載題庫

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208. The lifetime of a machine part is exponentially distributed with a mean of five years.

Calculate the mean lifetime of the part, given that it survives less than ten years.
(A) 0.865
(B) 1.157
(C) 2.568
(D) 2.970
(E) 3.435


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208. The lifetime of a machine part is e..-阿摩線上測驗