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What is the probability the phone will ring while the desk employee is gone on his break? Phone calls arrive at the rate of 15 per hour at the reservation desk for a hotel, according to a poisson distribution.If no calls are currently being processed, and the desk employee leaves the desk for a 10-minute break,

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The phone calls arrive at the rate of 15 per hour. There is one phone call arriving on an average every four minutes. 10 minutes is 2.5 times this interval.

The probability of an event occurring k number of times in a given interval lambda is `P(k,...

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