Question: Let{Sk = kt=1 Yt, tN} be a simple random walk process, where Y = 2Z-1, Ry:={-1,1}, teN, {Z, TEN) is an IID Bernoulli process, Z,

Let{Sk = kt=1 Yt, t∈N} be a simple random walk process, where

Y = 2Z-1, Ry:={-1,1}, teN, {Z, TEN) is an IID Bernoulli process,

Y = 2Z-1, Ry:={-1,1}, teN, {Z, TEN) is an IID Bernoulli process, Z, BerlID(p, p(1 - p)). Show that for p = .5, {Sk=Y, teN) is a martingale process.

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