Question: I just need help answering Question d, since I got it wrong. cafeteria serving line has a coifee urn from which customers serve themselves. Arrivals
I just need help answering Question d, since I got it wrong.

cafeteria serving line has a coifee urn from which customers serve themselves. Arrivals at the urn follow a Poisson distribution at the te of 2.0 per minute. In serving themselves, customers take about 19 seconds, exponentially distributed 4. What is the probstaly then thive or more pecopie ari in the cifoterin? (Round your Intermediate calculations to 3 decimat places
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