Hypotheses for 2-Sample Poisson Rate

For 2-sample Poisson rate, the hypotheses are as follows.

Null hypothesis

H₀: λ₁– λ₂ = d₀	The difference between the population rates of two samples (λ₁– λ₂) equals the hypothesized difference (d₀).

Alternative hypothesis

Select one of the following alternative hypotheses.

H₁: λ₁– λ₂ ≠ d₀	The difference between the population rates of two samples (λ₁– λ₂) is not equal to the hypothesized difference (d₀).
H₁: λ₁– λ₂ > d₀	The difference between the population rates of two samples (λ₁– λ₂) is greater than the hypothesized difference (d₀).
H₁: λ₁– λ₂ < d₀	The difference between the population rates of two samples (λ₁– λ₂) is less than the hypothesized difference (d₀).