Let (X1, X2, ..., Xk) be a multinomial random variable with parameters (n, P1, P2, ..., Pk). Cov(X₁, Xj) = -npiPj Hint: Express X; as a sum of indicator random variables. Show that
Let (X1, X2, ..., Xk) be a multinomial random variable with parameters (n, P1, P2, ..., Pk). Cov(X₁, Xj) = -npiPj Hint: Express X; as a sum of indicator random variables. Show that
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 29E
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