Question

Ira wants to determine the fast food restaurant preferred by the majority of twelve year olds in his town. Which sample population should he survey to get a random sample?
A.) Every third child that enters junior high school on a particular day.

B.) Every twelve year old that enters a particular hamburger restaurant in town.

C.) Every twelve year old that leaves a particular pizza restaurant in town.

D.) Every third twelve year old that leaves school on a particular day.

Answer 1

The answer is D) because C) and B) are biased and would not be reasonable and A) has no guarantee of every third child being 12.