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  3. let n1 , n2 , n3 follow a trinomial distribution w

Let N1 , N2 , N3 follow a trinomial distribution with parameters n, assume that n...

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Statistics

Let N1 , N2 , N3 follow a trinomial distribution with parametersn, assume that n follows a Poisson distribution with parameter λ> 0. Also assume that, conditionally on N, the random variablesN1, N2, N3 follow a trinomial distribution with N trials andcategory probabilities p1, p2, p3 with p1 + p2 + p3 = 1. Computethe covariance and correlation of (N1,N2)

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The pmf of multinomial random variable is defined aswhereThis is    See Answer
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