Construct the requested confidence interval. A survey of 400 non-fatal accidents revealed that 268 involved a distracted driver using some kind of electronic device. Construct a 95% confidence interval for the proportion of non-fatal accidents involving a distracted driver using some kind of electronic device.

A magazine publisher wishes to determine what proportion of current subscribes will renew. The publisher selects a random sample of 200 subscribers and finds that 108 plan to renew. Calculate a 99% confidence interval for the proportion of all that plan to renew.

In a survey of 2291 ​adults, 708 say they believe in UFOs.   Construct a 90% confidence interval for the population proportion of adults who believe in UFOs

A Gallup poll of 1487 adults showed that 43% of the respondents have Facebook pages.  Construct a 95% confidence interval for the proportion of adults who have a Facebook page.

Based on a sample of 1000 adult Americans, USA Today reported that 840 of them preferred cheese on their burgers. Calculate and interpret an 88% confidence interval for the proportion of all adult Americans who prefercheese on their burgers.

In a survey of 3038 ​adults, 1448 say they have started paying bills online in the last year.   Construct a​ 99% confidence interval for the population proportion. Interpret the results.

In a survey of 1000 households, 800 had cell phones but no landline. Construct a 95% confidence interval for the proportion of all households with a cell phone but no landline.

In a survey of 2567 ​adults, 1431 say they have started paying bills online in the last year.   Construct a​ 99% confidence interval for the population proportion. Interpret the results.

An internet study was mailed to 2336 subjects randomly. 1108 surveys were returned. Construct a 95% confidence interval for the proportion of the returned surveys. identify the margin of error E.

In a study designed to determine whether there was a cluster of brain cancer cases at a Pratt & Whitney plant, record from 223,000 employees were studied and 723 employees with brain tumors were found. Treat those employees as a random sample and construct a 95% confidence interval estimate of the proportion of all adults who develop such tumors. write a brief statement interpreting that confidence interval.