Question: For the multinomial distribution (Exercise 17), let N, denote the number of times outcome i occurs. Find (i) E[Ni] (ii) Var(N) (iii) Cov(N, NJ) (iv)

For the multinomial distribution (Exercise 17), let N, denote the number of times outcome i occurs. Find (i) E[Ni] (ii) Var(N) (iii) Cov(N, NJ) (iv) Compute the expected number of outcomes which do not occur.

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