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Problem 4 (10pts). A piece of equipment has 5 independent parts at least 4 of which uust remain active ith in order for the equipment to function. The lifetine (n hours) of each component follows a distribution w probability density function 0, else. Find the probability density function of the lifetime T (in hours) of the equipment

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CN component top »t t enda a on PDF 2-1 洸 tl20L- e Ce)

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