(4) Obtain the mgf of Y when Y - Poisson(a). The following is the derivation. Justify the marked steps. 00 (i-WHY) E(e") etk k! k=0 00 (de')k "Σ k! k=0 (ii-WHY) Ae' –1) . Binomial series Definition of E(Y) CVF Geometric series None of the above N/A (i-WHY, Select One) Binomial series Definition of E(Y) Geometric series Exponential series None of the above N/A (ii-WHY, Select One)

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