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Determine the probability that one of these light bulbs will

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Reference no: EM13914342

Lucky Lumen light bulbs have an expected life that is exponentially distributed with a mean of 20,000 hours. Determine the probability that one of these light bulbs will last
a. At least 24,000 hours.
b. No longer than 4,000 hours.
c. Between 4,000 hours and 24,000 hours.

Reference no: EM13914342

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