1
AssignmentMultiple Choice

Populations and Sampling

Question 1 • CR02201A Probability and Statistics

Natasha wants to find out if the neighborhood supports lowering the speed limit on the street in front of her school. Which is a valid sample for the survey?

Answer
A
students in Natasha’s social studies class
B
parents who live in a town 15 miles away from Natasha’s school
C
the first 5 drivers who drive past Natasha’s school one morning
D
thirty residents who live within a 2-miles radius of Natasha’s school

Explanation

A valid sample should represent the neighborhood whose support Natasha wants to measure. Thirty residents who live within 2 miles of the school are likely to be affected by the speed limit and are part of the local community. Students in one class and parents in another town do not represent the neighborhood, while the first five passing drivers are too few and may not be representative.

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