Let BuysBeer be a random variable with values 0 and 1 for false and true, respectively, and let Customer Type be a random variable with values single, couple, and family. The joint probability distribution for BuysBeer and Customer Type is given by: 1. P(BuysBeer = 1) 2. P(Customer Type = couple) 3. P(Customer Type couple, BuysBeer = 1)= 4. P(Customer Type = couple | BuysBeer = 1)

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