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Suppose that the longevity of a light bulb is exponential with a mean lifetime of 7.6 years. Find the probability that a light bulb lasts

Suppose that the longevity of a light bulb is exponential with a mean lifetime of 7.6 years. Find the probability that a light bulb lasts less than three years.

  • A.0.1175
  • B.0.3261
  • C.8.5634
  • D.0.6739
  • E.0.3907

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