3) The time required for a mechanic to repair a machine follows an exponential distribution with a mean of 4 hours. Howe
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3) The time required for a mechanic to repair a machine follows an exponential distribution with a mean of 4 hours. Howe
3) The time required for a mechanic to repair a machine follows an exponential distribution with a mean of 4 hours. However, if he rents a special tool, he can reduce the mean time to 2 hours. If he repairs a machine in less than 2 hours, he makes $200 for the repair; otherwise, he is paid $160. What is the most he should be willing to pay to rent the special tool?
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