In need of help

[pbrain26]

Sweetwater & Associates write weekend trip insurance at a very nominal charge.
Records show that the probability that a motorist will have an accident during the weekend and file a claim is 0.0005.
Suppose they wrote 400 policies for the coming weekend,
what is the probability that exactly two claims will be filed?

Please assist, thank you

 

[JeffM]

As our name implies, this is a HELP site, NOT an answer site.

If you have done any work, please show it even if you are certain that it is wrong.

If you have not done any work because you are uncertain about where to begin, it is useful to tell us that and give us an idea of what specifically you are currently studying. It APPEARS that you are studying the binomial distribution.

Assuming that is true, let's start by trying to apply that distribution.

With respect to a specific policy, what is the probability that a claim will be filed?

With respect to a specific policy, what is the probability that a claim will not be filed?

Assuming that claims are independent, what is the probability that claims will be made on policies 1 and 2 and not be made on any other policy?

Is that the only way that exactly two claims can be made?