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Mathematics, 06.12.2019 19:31 lilmamagodchild123

Suppose that when a transistor of a certain type is subjected to an accelerated life test, the lifetime x (in weeks) has a gamma distribution with mean 40 weeks and variance 320 weeks.

a) what is the probability that a transistor will last between 1 and 40 weeks?
b) what is the probability that a transistor will last at most 40 weeks?

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