Question: Question 16 15 ports A cafeteria serving line has a coffee urn from which customers serve themselves. Arrivals at the urn follow a Polsson distribution

Question 16 15 ports A cafeteria serving line has a coffee urn from which customers serve themselves. Arrivals at the urn follow a Polsson distribution at the rate of three per minute in serving themselves, customers take about 15 seconds, exponentially distributed. a. how many customers would you expect to set on the average at the calfer um? b. how long would you expect it to take to get a cup of coffee? c. what percentage of time is the urn being used

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