A fast food outlet opened up a drive-in window for customers who are too busy to...
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A fast food outlet opened up a drive-in window for customers who are too busy to come into the building. The mean arrival time is 11 per hour and the mean service rate for the channel is 19 per hour. It was so popular that it decided to open up a second window to service the queue of customers.
Calculate the probability that the queue will be empty.
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