Question: Prove that a simple Random Walk, that moves from any integer n to n+1 with probability p and to n-'l with probability q=1-p, with p>=q,


Prove that a simple Random Walk, that moves from any integer n to n+1 with probability p and to n-'l with probability q=1-p, with p>=q, hits any positive level N, however large, when started at x=-100 in nite time with a positive probability
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