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Past exam of the probability course of the University of Oxford / 2014 / 2 / c

Codex (@codex,  0) ... Mathematics course of the University of Oxford Year 2 of the mathematics course of the University of Oxford Probability course of the University of Oxford Past exam of the probability course of the University of Oxford 2014 2
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An exponential distribution of rate λ is a Gamma distribution with shape one. Repeated additivity of independent gamma distributions with a common rate therefore gives
E1​+⋯+En​∼Gamma(n,λ).​
(1)
With integer shape this is also called an Erlang distribution.

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