1. A public opinion poll group in Ohio wants to determine whether registered voters in the state approve of a measure to ban smoking in all public areas.They select a simple random sample of 50 registered voters from each county in the state and ask whether they approve or disapprove of the measure.

A) A simple random sample

C) A cluster random sample

B) A stratified random sample

D) A systematic sample with random start

ANSWER:

REASON:

2. The same group in # 5 decides that it is too complicated to contact 50 voters in each and every county. Instead, they make a list of all of the counties in Ohio, and then choose 12 of them randomly.Then, they select a simple random sample of 50 registered voters from each of those counties in the state and ask whether they approve or disapprove of the smoking ban measure.

A)

A simple random sample

C)

A cluster random sample

B)

A stratified random sample

D)

A systematic sample with random start

ANSWER:

REASON: