Which of the Following Is an Example of a Binomial

Multiple Choice

Which of the following is an example of a binomial experiment?

A) A shopping mall is interested in the income level of its customers and is taking a survey to gather information.
B) A business firm introducing a new product wants to know how many purchases its clients will make each year.
C) A sociologist is researching an area in an effort to determine the proportion of households with a male head of household.
D) A study is concerned with the average number of hours worked by high school students.
E) All of these.