a. Construct a 90% confidence interval. Express the percentages in decimal form.

A survey asked, "How many tattoos do you currently have on your body?" Of the 1241 males surveyed, 182 responded that they had at least one tattoo. Of the 1047 females surveyed, 139 responded that they had at least one tattoo. Construct a 99% confidence interval to judge whether the proportion of males that have at least one tattoo differs significantly from the proportion of females that have at least one tattoo. Interpret the interval. P1 Let p, represent the proportion of males with tattoos and p, represent the proportion of females with tattoos. Find the 99% confidence interval for p, - p2. The lower bound is The upper bound is (Round to three decimal places as needed.)

Express the confidence interval (13.8 %, 20 %) in the form of p ± E. % ± %

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Educational Television In a random sample of 195 people, 160 said that they watched educational television. Find the 95% confidence interval of the true proportion of people who watched educational television. Round the answers to at least three decimal places.     <p<

Virginia wants to estimate the percentage of students who live more than three miles from the school. She wants to create a 95% confidence interval which has a margin of error of at most 5%. How many students should be polled to create the confidence interval? z0.10 z0.05 z0.025 z0.01 z0.005 1.282 1.645 1.960 2.326 2.576 Use the table of values above.

A poll of 2612 U.S. adults found that 15% 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…

Use the confidence interval to find the margin of error and the sample mean. (1.62,2.00) The margin of error is (Round to two decimal places as needed.)

Use the confidence interval to find the margin of error and the sample mean. (1.53,1.91) The margin of error is. (Round to two decimal places as needed.) The sample mean is (Type an integer or a decimal.) ts

Use the confidence interval to find the estimated margin of error. Then find the sample mean.   A store manager reports a confidence interval of (41.6,81.0) when estimating the mean price​ (in dollars) for the population of textbooks.       The estimated margin of error is enter your response here. ​(Type an integer or a​ decimal.)