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QUESTION
The amount of time a bank teller spends with each customer has a population mean of 3.10 minutes and a standard deviation of 0.40 minute.
The amount of time a bank teller spends with each customer has a population mean of 3.10 minutes and a standard deviation of 0.40 minute. If you select a random sample of 16 customers what is the probability that the mean time spent percustomer is at least 3 minutes
