# Poisson Distribution Tests

Posted by Beetle B. on Tue 18 July 2017


For a Poission distribution with large $$n$$, use $$Z=\frac{\bar{X}-\lambda}{\sqrt{\lambda/n}}$$ (i.e. $$\lambda$$ instead of $$S$$).

It is approximately normal. Use it to test $$H_{0}:\lambda=\lambda_{0}$$