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The life of an electric component has an exponential distribution with a mean of 10 years. What is the probability that a randomly selected one

The life of an electric component has an exponential distribution with a mean of 10 years. What is the probability that a randomly selected one such component has a life more than 7 years

A local grocery delivery time has a uniform distribution over 0 to 60 minutes. What is the probability that the grocery delivery time is more than 15 minutes on a given day?

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