I am not sure exactly how the question goes. But it had something to do with:

In september to october the number of rainy days follows a poisson distribution with a certain mean that I cannot remember, and the other months also have a poissson distribution with a certain mean.

Find the probability that it rains in july august sept , or something like that. Could someone provide the solution to this question?

Thanks.

In september to october the number of rainy days follows a poisson distribution with a certain mean that I cannot remember, and the other months also have a poissson distribution with a certain mean.

Find the probability that it rains in july august sept , or something like that. Could someone provide the solution to this question?

Thanks.

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