Posted by **Desire Glenn** on Monday, November 5, 2012 at 11:02am.

From a recent statistical analysis for the last five years, on an average there

are 4 (major) air accidents per month in the world. Let X be the number of air accidents occurred in a randomly selected month. It is known that X ~ Poisson() approximately, where the intensity 4 accidents (monthly average number of accidents). Find the probability that there will be 4 or more air accidents

- Statistics -
**Bobby**, Monday, November 5, 2012 at 11:23am
Sooo...I see you are having problems with this too! LOL

- Statistics -
**MathGuru**, Monday, November 5, 2012 at 6:23pm
Try the Poisson Distribution.

Poisson distribution (m = mean):

P(x) = e^(-m) m^x / x!

Values:

x = 0,1,2,3

m = 4

Calculate P(0), P(1), P(2), P(3). Add together, then subtract that value from 1. This will be your probability.

I hope this will help get you started.

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