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.