Question

TII t slllaid devilatión of this probability function? 6, 25% of the customers at XYZ Stores use a debit card to pay for their purchases. In a recent market research study, 18 of the Store's over 20,000 customers on record was randomly selected for two focus groups on new payment technologies. (5 points) a Is the selection of 18 customers a binomial experiment? Please explaun b. What is the probability that 5 of the 18 customers selected use a debit card to pay for their purchases? debit card to pay for their purchases? debit card to pay for their purchases? selected use a debit card to pay for their purchases? c. What is the probability that at least 4 of the 18 customers selected usea d. What is the probability that at most 4 of the 18 customers selected use a e. What is the probability that at least 3 but no more than 6 customers 7. Customers arrive at the drive-through lane of a fast food restaurant at a rate of one every 3 minutes. Use the Poisson probability distribution to answer the following questions: (8 points) a. What is the expected number of calls in one hour? b. What is the probability that exactly two customers arriving at the drive- through lane in a nine-minutes interval? What is the probability that less than two customers arrive at the drive through lane a nine-minutes interval? c. d. What is the probability that two or more customers arrive at the drive through lane a nine-minutes interval?

Answer 1