A birth-and-death chain has state space X={0, 1, 2,...,n). In one step the state can increase or decrease by at most 1. The current state can be thought of as the size of some population; in a single step of the chain there can be at most one birth or death. The transition probabilities can be specified by {(Pk. Tk. 9k)}k=0' where Pk+k+qk = 1 for each k and Pk is the probability of moving from k to k +1 when 0k Program a code in python to explain birth and death chain