A national survey of TV network news viewers found that 48% said they would believe a phone-in poll of 300,000 persons rather than a random sample of 1000 persons. Of the viewers, 42% said they would believe the random sample poll.
Which of the following statements correctly explains why the opinions of only 1000 randomly chosen respondents are a better guide to what all people think than the opinions of 300,000 callers?
A.
The 1000 randomly chosen respondents represent the population as a whole, whereas the 300,000 callers did not do so.
B.
The 1000 randomly chosen individuals were chosen as a personal choice of the TV network, whereas the 300,000 called voluntarily and do not represent the choice of the TV network.
C.
The 1000 randomly chosen respondents represent the intellectual population, whereas the 300,000 callers did not do so
Answer: B.
The 1000 randomly chosen individuals were chosen as a personal choice of the TV network, whereas the 300,000 called voluntarily and do not represent the choice of the TV network.
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