Telephone Poll Radio and Television Stations Often Air Controversial Issues During Broadcast

Telephone Poll
Radio and television stations often air controversial issues during broadcast time and ask viewers to indicate their agreement or disagreement with a given stand on the issue. A poll is conducted by asking those viewers who agree to call a certain 900 telephone number and those who disagree to call a second 900 telephone number. All respondents pay a fee for their calls.
-Please refer to Telephone Poll paragraph. What can be said about the validity of the results of such a survey? Do you need to be concerned about a margin of error in this case? Justify your conclusion.

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The results of such a survey w...

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