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Cars arrive at Carlas Muffler Shop for repair work at an average of 3 per hour, following an exponential distribution. (a) What is the expected

Cars arrive at Carlas Muffler Shop for repair work at an average of 3 per hour, following an exponential distribution. (a) What is the expected time between arrivals? (b) What is the variance of the time between arrivals?

Use Appendix C

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