A pet store sells mice, reptiles, and birds.Let event A = A customer buys a mouse.Let event B = A customer buys a bird.What does P(A or B) = 0.15 mean in terms of this problem?A.The probability that a customer buys neither a mouse nor a bird is 15%.B.Buying a mouse and buying a bird are mutually exclusive events.C.The probability that a customer buys both a mouse and a bird is 15%.D.The probability that a customer buys either a mouse or a bird is 15%.SUBMITarrow_backPREVIOUS

A food truck sells tacos, burritos, and drinks.Let event A = A customer buys a taco.Let event B = A customer buys a drink.What does P(A or B) = 0.45 mean in terms of this problem?A.The probability that a customer buys both a taco and a drink is 45%.B.The probability that a customer buys neither a taco nor a drink is 45%.C.The probability that a customer buys a taco, a drink, or both is 45%.D.Buying a taco and buying a drink are mutually exclusive events.

At a hardware store, the probability that a customer buys nails is 0.10. The probability that a customer buys nails given that the customer buys a hammer is 0.40.Which statement is true?A.Every customer who buys nails also buys a hammer.B.The probability that a customer buys a hammer and nails is 0.30.C.Buying a hammer and buying nails are dependent events.D.Buying a hammer and buying nails are independent events.SUBMITarrow_backPREVIOUS

A marketing firm tracks data on grocery store visits. In one study, it finds that the probability that a shopper buys bread during a visit to the grocery store is 0.70, and the probability that a shopper buys cheese is 0.20.Event A = A shopper buys bread.Event B = A shopper buys cheese.A and B are independent events if _____.A.the probability of buying bread and cheese is 0.14B.the probability of buying bread and cheese is 0C.the probability of buying bread or cheese is 0.90D.the probability of buying bread or cheese is 0.14SUBMITarrow_backPREVIOUS

At the mall, buying a pair of shoes and buying a book are independent events.The probability that a shopper buys shoes is 0.20. The probability that a shopper buys a book is 0.10.What is the probability that a shopper buys shoes and a book?A.0.10B.0.20C.0.30D.0.02SUBMITarrow_backPREVIOUS

We found that P(A and B) = 0.15. Since the probability that both events happen at the same time is not 0, it means that events A and B have some outcomes in common. Therefore, the events A and B are not mutually exclusive.To compute P(A or B) means that we wish to find the probability that either A happened or B happened. Since the events are not mutually exclusive, we can apply the general addition rule for events. Recall that P(A) = 0.3 and P(B) = 0.5.P(A or B)  =  P(A) + P(B) − P(A and B) =  0.3 + 0.5 −  =