People from east coast and midwest carry different types of credit cards. credit card visa master american express discover east coast 0.45 0.37 0.16 0.02 midwest 0.40 0.43 0.03 ? (a) what is the probability that a person from midwest has discover card? (b) what is the probability that a person chosen at random from east coast and midwest, independently of one another, both have type american express? (c) what is the probability that a person chosen at random from east coast and midwest, independently of one another, both have the same type of credit ca