(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

http://img171.imageshack.us/img171/4711/52047019pc2.png [Broken]

1. The problem statement, all variables and given/known data

2. Relevant equations

Random walk equations: X_{i}is i.i.d. and [tex]S_n = X_1+...+X_n[/tex] and S_{0}=0

3. The attempt at a solution

I don't have a idea where to begin. I couldn't start because I don't know how to apply the random walk.

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# Homework Help: Random walk

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