Suppose the time a customer waits in line at a bank averages 8 min with a standard
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Suppose the time a customer waits in line at a bank averages 8 min with a standard deviation of 2 min. In a random sample of five customers, what is the probability that the average time in line will be at least 10 min? What is the mean of the sample waiting time? What is the standard deviation of the sample mean?
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Related Book For 
Statistics For Business And Financial Economics
ISBN: 9781461458975
3rd Edition
Authors: Cheng Few Lee , John C Lee , Alice C Lee
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