Cafeteria has a coffee urn to service customers

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A cafeteria has a coffee urn to service customers. Arrivals follow a Poisson distribution at a rate of 3 per minute. Customers take 15 seconds to get coffee, exponentially distributed. Suppose the urn is replaced by a machine that has a constant service time of 15 seconds. How many people will be in line and how long will it take to get coffee?

Reference no: EM131036424

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