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10 cards from this deck
Exponential: continuous (time between events); Poisson: discrete (count)
Time between events
λ=1μ\lambda = \frac{1}{\mu}λ=μ1
Rare, constant rate, independent
e−λλxx!\frac{e^{-\lambda} \lambda^x}{x!}x!e−λλx
Discrete
Po(λ1+λ2)Po(\lambda_1 + \lambda_2)Po(λ1+λ2)
Po(nλ)Po(n\lambda)Po(nλ)
1−P(X≤k)1 - P(X \leq k)1−P(X≤k)
λe−λx\lambda e^{-\lambda x}λe−λx for x>0x > 0x>0
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