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1. The mean service time at the Starbucks in Ross main building is 2.75 minutes. Assume the service time follows an exponential distribution. You observe

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1. The mean service time at the Starbucks in Ross main building is 2.75 minutes. Assume the service time follows an exponential distribution. You observe service times for a random sample of 64 customers at the Ross Starbucks. What is the probability that the sample mean is less than 3 minutes

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