Radio and television stations often air controversial issues during broadcast time and ask listeners and viewers to indicate their agreement or disagreement with a given stand on the issue. A poll is conducted by asking those listeners and viewers who agree to call a certain 900 telephone number and those listeners and viewers who disagree to call a second 900 telephone number. All respondents pay a fee for their calls. Does this polling technique result in a random sample? Why?
| a. |
Yes, the method of sampling is a valid technique. |
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| b. |
Yes, the method of sampling is random. |
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| c. |
No, the method of sampling is random since only interested viewers (those who were adamant in their approval or disapproval) would reply. |
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| d. |
No, the method of sampling is not random since only interested viewers (those who were adamant in their approval or disapproval) would reply. |
No, the method of sampling is not random since only interested viewers (those who were adamant in their approval or disapproval) would reply.
Option D is correct.
Radio and television stations often air controversial issues during broadcast time and ask listeners and viewers...
1. The television program Nightline once asked viewers whether the United Nations should continue to have its headquarters in the United States. Two phone numbers weregiven. Viewers were asked to call one telephone number to respond “Yes” and the other to respond “No”. More than 186,000 callers responded and 67% said “No.” This isan example ofA. voluntary response sampling.B. a survey with little bias because a large SRS was used.C. a survey with little bias since someone who called would...