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A customer service desk with1worker is able to process an average of8customer inquiries per hour. An average of4customers arrive for help at the desk each

A customer service desk with 1 worker is able to process an average of 8 customer inquiries per hour. An average of 4 customers arrive for help at the desk each hour.

1. What is the probability that 2 customers will arrive in the next hour?

2. What is the probability it will take longer than 11 minutes to serve a customer?

3. What is the average time required to serve a customer (in minutes)?

4. What is the probability that more than 2 customers will arrive in the next hour?

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