A poll of 1834 U.S. adults found that 735 U.S. adults, or 40.076% 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 %
A poll of 1834 U.S. adults found that 735 U.S. adults, or 40.076% 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
- increases
- stays roughly the same
- decreases
and the precision of our estimate
- stays roughly the same
- increases
- decreases
Step by step
Solved in 3 steps with 2 images
