Question

A poll of 2752 U.S. adults found that 90% 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. *Round
all answers to 2 decimal places.*

Margin of Error (as a percentage):

Confidence Interval: % to %

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. *Round
all answers to 2 decimal places.*

Margin of Error (as a percentage):

Confidence Interval: % to %

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. *Round
all answers to 2 decimal places.*

Margin of Error (as a percentage):

Confidence Interval: % to %

The more error we allow, the less precise our estimate. Therefore, as the confidence level increases, the precision of our estimate

- stays roughly the same
- decreases
- increases

Answer #1

1. A poll of 2234 U.S. adults found that 31% 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. Round
all answers to 2 decimal places.
Margin of Error (as a percentage):
Confidence Interval: % to %
Find the margin of error and confidence interval for the
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