An environmental group wants to use a survey to determine the extent to which its members would be willing to protest a recent decision of the governor of a particular state. Which of the following procedures would be most appropriate for obtaining a statistically unbiased sample?
?
A. Survey a selection of people whose names are randomly chosen from the telephone directory.
B. Have sign-ups for workers to gather signatures at local malls throughout the state.
C. Survey members attending the annual convention of the environmental group.
D. Survey a selection of people whose names are randomly chosen from a list of members of the environmental group.
What will be an ideal response?
Answer: D
Mathematics
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