Question: For questions 14, 15, and 16 The amount of time a bank teller spends with each

customer is normally distributed with a mean of 3.10 minutes and a standard

deviation of 0.40 minutes. (Use the z table and excel to answer the

questions below)

If a random sample of 16 customers is selected from the bank, what is the probability that the average time spent per customer will be at least 3 minutes?