7
QuizMultiple Select

Multiple Samples

Question 7 • CR02201A Probability and Statistics

Abigail wants to determine which time of day people prefer to exercise. She will collect three samples. Which statements describe good methods for collecting the samples? Select three options.

Answer
A
Go to the gym in the morning to survey the people entering because it is likely they will exercise.
B
Go to a local mall and survey people because a variety of people go to the mall.
C
Go to a grocery store and survey people because almost everyone shops for groceries.
D
Survey the students in third grade because little kids love to run around and play.
E
Survey people at different times of the day to ensure she reaches people on different schedules.

Explanation

To learn which times people prefer to exercise, Abigail needs samples that include a variety of people rather than a group likely to favor one particular time. A mall or grocery store attracts people with different schedules, and surveying at different times of day helps reach people who may not be available at other times. Surveying morning gym-goers could overrepresent people who exercise in the morning, while third graders are not representative of people generally.

AI-written and checked against the verified answer.

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