10.2

A poll of 1729 U.S. adults found that 974 U.S. adults, or 56.333% 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): 1.96 Confidence Interval: 54.37 % to 58.29 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): 2.34 Confidence Interval: 53.99 x % to 58.67 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): 3.01 X Confidence Interval: 53.32 X %% to 59.34 X The margin of error reflects the precision or accuracy of our estimate. Therefore, as the confidence level