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(9) Assume that the distance between major cracks in a highway follows an exponential distribution with a mean of 10 km. a) What is the

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(9) Assume that the distance between major cracks in a highway follows an exponential distribution with a mean of 10 km. a) What is the probability that there are no major cracks in 20 km stretch of the highway? b) What is the probability that there are two major cracks in a 20 km stretch of the highway? c) Given that there are no cracks in the rst 10 km inspected, what is the probability that are no major cracks in the next 20 km inspected

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