Let X1, X2, ..., Xn be independent and identically distributed random variables, X ∼ Exp(λ). Show that the sum X1 + X2 + · · · + Xn is Γ(n, λ) distributed.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 31E
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Let X1, X2, ..., Xn be independent and identically distributed random variables, X ∼ Exp(λ). Show that the sum X1 + X2 + · · · + Xn is Γ(n, λ) distributed.

Let X1, X2, ..., X, be independent and identically distributed random variables, X ~
Exp(X). Show that the sum X1 + X2+ · + Xn is I'(n, A) distributed.
Transcribed Image Text:Let X1, X2, ..., X, be independent and identically distributed random variables, X ~ Exp(X). Show that the sum X1 + X2+ · + Xn is I'(n, A) distributed.
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