Suppose that the number of years a car will run is


1Suppose that the time (in hours) required to repair a car is an exponentially distributed random variable with parameter λ = 1/2. What is the probabil- ity that the repair time exceeds 4 hours? If it exceeds 4 hours what is the probability that it exceeds 8 hours?

2. Suppose that the number of years a car will run is exponentially distributed with parameter µ = 1/4. If Prosser buys a used car today, what is the probability that it will still run after 4 years?

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Basic Statistics: Suppose that the number of years a car will run is
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