The distribution of customers arriving at a bank is Poisson with a standard deviation of 2...
The distribution of customers arriving at a bank is Poisson with a standard deviation of 2 customers per 15-minutes. What is the probability that more than 3 customers arrive during 15 minutes?
a. 0.4335
b. 0.5665
c. 0.1804
d. 0.1954
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