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Poisson distribution question keep getting wrong?
A telecommunication station is designed to receive a maximum of 12 calls per second. If the number of calls to the station is modeled as a Poisson random variable with a mean of 9 calls per second, what is the probability that the number of calls will exceed the maximum design constraint of the station? Round your answers to four decimal places (e.g. 98.7654).
Doing this on my calculator I got:
0.7576 which is wrong.
Any help would be appreciated
1 Answer
- JanLv 76 years ago
(e^(-9)*9^0)/0! + (e^(-9)*9^1)/1!+(e^(-9)*9^2)/2! +...+ (e^(-9)*9^12)/12! = 0.8758
correct?
