On weekend nights, a large urban hospital has an average of 4.8 emergency arrivals per hour. Let X be the number of arrivals per hour on a weekend night at this hospital. Assume that successive arrivals are random and independent. (a ) What is the distribution of X ? (b)What is the probability of observing exactly two emergency arrivals? (c) What is the probability of observing less than two emergency arrivals?

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On weekend nights, a large urban hospital has an average of 4.8 emergency arrivals per
hour. Let X be the number of arrivals per hour on a weekend night at this hospital. Assume that
successive arrivals are random and independent.
(a ) What is the distribution of X?
(b)What is the probability of observing exactly two emergency arrivals?
(c) What is the probability of observing less than two emergency arrivals?
Transcribed Image Text:On weekend nights, a large urban hospital has an average of 4.8 emergency arrivals per hour. Let X be the number of arrivals per hour on a weekend night at this hospital. Assume that successive arrivals are random and independent. (a ) What is the distribution of X? (b)What is the probability of observing exactly two emergency arrivals? (c) What is the probability of observing less than two emergency arrivals?
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