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(Solved): Define random walk {M_n} = Sum of X_j for n 1, M_o = 0. a) Calculate the covariance of {M_n}n ...



Define random walk {M_n} = Sum of X_j

for n ? 1, M_o = 0.

a) Calculate the covariance of {M_n}n?0.

b) Show that {M_n}n?0 is a martingale.



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a) The covariance of {M_n}n?0 is given by:Co
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