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ServiceOntario reports that among all customers who arrive to renew their driver's license, 30 percent of their licenses are already expired. (a) Suppose, each customer is considered as a "trial," state carefully the assumptions needed for the Bernoulli trial assumptions to hold. (b) Find the probability that among the 15 customers, at most 5 will have expired licences. (c) Let W denote the number of customers a staff will help until he finds the first customer with an expired license. What distribution does W follow? Find P(W