random walk (3)


by dirk_mec1
Tags: random, walk
dirk_mec1
dirk_mec1 is offline
#1
Dec1-08, 10:33 AM
P: 664
1. The problem statement, all variables and given/known data



3. The attempt at a solution
My difficulty is in the difference equation I don't understand how to prove it. I think you have to condition since I see something like *P(X_i=1) = p and *P(X_i=-1) = q.

Can someone help me, please?
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