Determine which of the given procedures describe a binomial distribution.
A)Observing that ten out of the next twenty customers at a grocery store checkout use a credit card given that the probability of using a credit card is 0.58.
B)Record the number of songs downloaded in a month for a group of 30 randomly selected college students.
C)Surveying customers entering a sporting equipment store until a customer responds that he or she was shopping for a bicycle.

Question

Quizplus · Accepted Answer

A binomial distribution describes the number of successes in a fixed number of independent Bernoulli trials, each with the same probability of success. In choice A, there is a fixed number of trials (20 customers), each customer has the same probability of using a credit card (0.58), and the outcome for each customer is independent.

Determine Which of the Given Procedures Describe a Binomial Distribution