Write a MATLAB code for the following question:
Customers depart from a bookstore according to a Poisson process with the rate of 4 customers per hour. Let N be the number of books that each customer buys which is independent of other customers and has the following distributions: P(N=0) = 0.2; P(N=1) = 0.4; P(N=2) = 0.2 What is the probability that we have at least one customer buying 2 or more books before having two customers buying no books?