Here is an explanation from a newspaper concerning one of its opinion polls. Explain what is wrong
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Here is an explanation from a newspaper concerning one of its opinion polls. Explain what is wrong with the following statement.
For a poll of 1600 adults, the variation due to sampling error is no more than 3 percentage points either way. The error margin is said to be valid at the 95% confidence level. This means that, if the same questions were repeated in 20 polls, the results of at least 19 surveys would be within 3 percentage points of the results of this survey.
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The statement is wrong because it implies that if the same questions were repeated in ...View the full answer
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