Example 7.36. Let {Xx be mutually indepenaent, each assuming the values 0, 1, 2.3 ..., a - 1 with probability Let S, = X1 + X2 + ... + Xp. Show that the probability generatine %3D function of S, is : P (s) = {; 1- sa %3D a(1 – s)] and hence P (S, = 1) =E (-1)"*ijsav (") (;="u) - av v=0

MATLAB: An Introduction with Applications
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Example 7-36. Let {Xx} be mutually independent, each assuming the values 0.12 .
..., a - 1 with probability . Let S, = X1 + X2 + ... + Xp. Show that the probability generatino
(6) = {;
P (s) :
1- sa
a(1 – s)
function of S, is :
P (S„ = j) = £ (-1)"*j*av (4)(;=u)
and hence
%3D
- av
v=0
Transcribed Image Text:Example 7-36. Let {Xx} be mutually independent, each assuming the values 0.12 . ..., a - 1 with probability . Let S, = X1 + X2 + ... + Xp. Show that the probability generatino (6) = {; P (s) : 1- sa a(1 – s) function of S, is : P (S„ = j) = £ (-1)"*j*av (4)(;=u) and hence %3D - av v=0
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