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I have this problem

## Homework Statement

In telephone network, an average number of failures during a month for one telephone owner is 8. What is the probability that some telephone owner will experience more than 4 failures?

## The Attempt at a Solution

I have no idea what distribution should I use to model this problem. So far I've come up with binomial distribution with probability of individual event 8/k, where k is number of connection the telephonist will make during a month.

But that seems really odd to me...

Could someone help please?

Thank you.