Friday
September 19, 2014

Homework Help: Statisitcs: Confidence Intervals and Errors:

Posted by Carma on Tuesday, September 11, 2007 at 4:25pm.

Confidence Intervals and Errors:
An opinion poll asks 1500 randomly chosen United States residents their opinions
about relations with the nations of Europe. The announced margin of error for 95%
confidence is + 3 points. But some people were not on the list from which
respondents were chosen, some could not be contacted, and some refused to answer.
Does the announced margin of error include errors from these causes? Explain
your answer.

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