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QUESTION 2 [9] Patients are known to arrive at a pharmacy randomly, with an average rate...

QUESTION 2 [9] Patients are known to arrive at a pharmacy randomly, with an average rate of four patients arriving per hour.

2.1.1 What is the probability that exactly three patients will arrive at the pharmacy during a particular hour? (3)

2.2) What is the probability that only one patient will arrive at the pharmacy during a 30 minutes interval? (3)

2.3) What is the probability that seven patients will arrive at the pharmacy during a two hour interval? (3)

Math   Statistics-And-Probability   
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