The number of people arriving for treatment at an emergency

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The number of people arriving for treatment at an emergency room can be modeled by Poisson process with rate parameter of 5 per hour.

a) What is probability of that excatly 4 arrivals occur during a particular hour?

b) what is the probability that at least 4 arrivals occur during a particular hour?

c) how many people do you except to arrive during a 45 min. period?

Reference no: EM13626507

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