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10 cards from this deck
λ\lambdaλ (the mean of Poisson distribution)
P(X=x)=λxe−λx!P(X = x) = \frac{\lambda^x e^{-\lambda}}{x!}P(X=x)=x!λxe−λ
Both equal λ\lambdaλ
H0:λ=λ0H_0: \lambda = \lambda_0H0:λ=λ0 (specifies a value)
One-tailed (λ>λ0\lambda > \lambda_0λ>λ0 or <<<) or two-tailed (≠\neq=)
Observed value of XXX following Po(λ)\text{Po}(\lambda)Po(λ)
Probability of rejecting H0H_0H0 when H0H_0H0 is true
Range of XXX values leading to rejection of H0H_0H0
P(Reject H0∣H0 true)≤αP(\text{Reject } H_0 | H_0 \text{ true}) \leq \alphaP(Reject H0∣H0 true)≤α
α/2\alpha/2α/2 in each tail
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