A poll of 1474 U.S. adults found that 1346 U.S. adults, or 91.316% regularly used Facebook as a news source. Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 90% level of confidence. Express all answers as percentages rounded to 2 decimal places. Do not write the percent sign. Margin of Error (as a percentage): ____ Confidence Interval:___ % to___ % Now find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 95% level of confidence. Margin of Error (as a percentage): ___ Confidence Interval:___ % to____ % Finally, find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 99% level of confidence. Margin of Error (as a percentage):___ Confidence Interval:___ % to___ % The margin of error reflects the precision or accuracy of our estimate. Therefore, as the confidence level increases, the margin of error decreases stays roughly the same increases and the precision of our estimate decreases stays roughly the same increases
A poll of 1474 U.S. adults found that 1346 U.S. adults, or 91.316% regularly used Facebook as a news source.
Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 90% level of confidence. Express all answers as percentages rounded to 2 decimal places. Do not write the percent sign.
Margin of Error (as a percentage): ____
Confidence Interval:___ % to___ %
Now find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 95% level of confidence.
Margin of Error (as a percentage): ___
Confidence Interval:___ % to____ %
Finally, find the margin of error and confidence interval for the percentage of U.S. adults who regularly use Facebook as a news source, at the 99% level of confidence.
Margin of Error (as a percentage):___
Confidence Interval:___ % to___ %
The margin of error reflects the precision or accuracy of our estimate. Therefore, as the confidence level increases, the margin of error
- decreases
- stays roughly the same
- increases
and the precision of our estimate
- decreases
- stays roughly the same
- increases
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