Question: 8.7 Consider an asymmetric random walk that takes a step to the right with probability p and a step to the left with probability q

8.7 Consider an asymmetric random walk that takes a step to the right with probability p and a step to the left with probability q 5 1 2 p. Assume that there are two absorbing barriers, a and

b, and that the walk starts at the point k, where b , k ,

a. a. What is the probability that the walk stops at b?

b. What is the mean number of steps until the walk stops?

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