Mathematics, 21.11.2020 23:00 Grayvtrain555
2. Patients arrive at a hospital accident and emergency department at random follow a
Poisson distribution at a rate of 6 per hour.
(a) Find the probability that, during any 90-minute period, the number of patients
arriving at the hospital accident and emergency department is
(i) exactly 7
(ii) at least 3
(b) What is the mean and standard deviation of the number of patients arriving at the
hospital accident and emergency department in an hour?
Answers: 3
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2. Patients arrive at a hospital accident and emergency department at random follow a
Poisson distr...
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