The life time t of a durable substance is an exponential

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The life time T of a durable substance is an exponential distributed ramdom varialble with average 1.5 year (Exponential).

(1) What is the probability that the life time of this substance exceeds 24 months?

(2) What is the probability that a sample of this substance can exist 14 years given that is duration exceeds 12 years.

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Reference no: EM13618876

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