At the end of a product's lifetime, the time until failure is modeled using an exponential distribution with mean 500 thousand hours. During its useful life, assume that product's time until failure is uniformly distributed over the range 100 thousand to 1 million hours. During its useful life, find the probability that the product fails before 600 thousand hours. O 77.78% O 55.56% O 79.81% O 69.88%

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