(Answered) In a certain study it is found that the life of a light

Statistics

In a certain study, it is found that the life of a light bulb is exponentially distributed with a mean life of 1,200 hours.

(a) What is the probability that a randomly selected bulb will last more than 1,400 hours?

(b) What is the probability that the bulb will last less than 1,000 hours?

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