Determine which of the given procedures describe a binomial distribution.
A)Record the number of songs downloaded in a month for a group of 30 randomly selected college students.
B)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.
C)Surveying customers entering a sporting equipment store until a customer responds that he or she was shopping for a bicycle.
D)Surveying every 5th person going into a department store to determine age groups of customers.

Question

Quizplus · Accepted Answer

B describes a binomial distribution because it involves a fixed number of trials (twenty customers), each trial has only two possible outcomes (using a credit card or not), the probability of success (using a credit card) is constant (0.58), and each trial is independent of the others.

Determine Which of the Given Procedures Describe a Binomial Distribution