Question

The time, in hours, required to fix a machine is an exponential variable with parameter λ...

The time, in hours, required to fix a machine is an exponential variable with parameter λ = 1/2

(a) What is the probability that the repair time exceeds 2 hours?

(b) What is the conditional probability that the repair time exceeds 10 hours, assuming it takes at least 9 hours?

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Answer #1

ga Let x be The time reqived t a machine (3 frobabiじ1ฐ That lhe repair4sme exceeds 2 hour = o.oo‘ 3P P(x79 011109 0-606S

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