Project #76688 - Confience Interval/margins

USA today provided a "snapshot" illustrating poll results from 21,944 subjects. The illustration showed that 43% answered "yes" to this question : " Would you rather have a boring job than no job?" The margin of error was given as plus and minus 1 percentage point. 

1. Describe what is meant by the statement that the "the margin of error is plus and minus 1 percentage point".   


2. Also, we are given that 43% of 21,944 people polled answered "yes". Given that 43% is the best estimate of the population percentage, why would we need a confidence interval?   

3. What additional information does a confidence interval provide. 

Subject Mathematics
Due By (Pacific Time) 07/19/2015 12:00 am
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