lambda will be 100000 X 2.5/100000 = 2.5
P(X<=5) = sum from 0 to 5 of your poisson function
does that sound right?
This question has stumped me and I have only come up with P values greater then 1. If you could give me any insight that would be much appreciated.
Suppose that sporadic outbreaks of E. Coli have occured in alberta at a rate of 2.5 per 100,000 for a period of two years. suppose the rate has not changed.
A) what is the probability that AT MOST 5 cases of e. coli per 100,000 are reported in alberta in a given year?