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Types of Sampling: Turn the Lights on

APSTAT-QELKVF

A town committee is thinking about investing $\$200,000$ for lighting the baseball fields. The first selectman of the town wants to survey $500\text{ citizens}$ of the town to see what they think. Which of the following will produce a simple random sample?

A

Surveying every fourth citizen who walks by the town hall.

B

Randomly selecting $500\text{ citizens}$ from the local phone directory.

C

Using the latest census data from the town, numbering the citizens, and using a random number generator to select $500\text{ citizens}$.

D

Separate by age groups using the latest census data from the community. The age groups would be $18-30$, $31-45$, $46-65$, and $65$ and over. Randomly select two of the age groups and randomly survey $250$ citizens from those two age groups.

E

Separate by age groups using the latest census data from the community. The age groups would be $18-30$, $31-45$, $46-65$, and $65$ and over. Randomly select $125\text{ citizens}$ ages $18-30$, $125\text{ citizens}$ ages $31-45$, $125\text{ citizens}$ ages $46-65$, and $125\text{ citizens}$ ages $65$ and over.