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The time to failure of a component in an electronic device has an exponential distribution with a mean of 8 years. a. Calculate the probability

The time to failure of a component in an electronic device has an exponential distribution with a mean of 8 years. a. Calculate the probability that the component will fail in less than 4 years. b. Given the component has lasted 2.5 years, determine the probability the component will last an additional 3.3 years.

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