# Question

Swapna David is a customer assistant consultant for Acme Information Systems, who provides assistance for computer users. The mean number of calls per hour is 40 from across the United States and calls are independent.

She has just finished a call and is scheduled to take the next call. What is the probability that she will have at least 3 minutes to obtain her cup of tea?

She has just finished a call and is scheduled to take the next call. What is the probability that she will have at least 3 minutes to obtain her cup of tea?

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