The Two-Sample Poisson Test is used to test if differences exist in Poisson Rates of two independent populations from which the samples were drawn.

## Hypotheses

The following hypotheses may be tested:

Where and are the population Rates from which the samples were drawn.

## Assumptions

- The samples has been randomly drawn from two independent populations (Critical)
- The populations may be modeled with Poisson distributions (Critical)

## Test Statistic

## Output

### Note

The p-value is flagged with an asterisk (*) when p <= alpha.