Consider a random walk consisting of equi-probable p = q = 1/2 steps in left or right directions. However the step length at ith

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Consider a random walk consisting of equi-probable p = q = 1/2 steps in left or right directions. However the step length at ith step is given by e-, i = 1,2,3..... N, with > 0 a constant. Calculate the mean displacement and mean-squared displacement, after N steps. What happens when N o?

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