random sample of 5005 adults in a country includes 760 who do not use the Internet. Construct a 95% confidence interval estimate of the percentage of adults in the country who do not use the Internet. Based on the result, does it appear that the percentage of adults in the country who do not use the Internet is different from 48%, which was the percentage in the year 2000? BEZER

Twenty car salespeople were sampled to see how many cars they sold in a month; the following data was obtained: 18, 18, 23, 17, 22, 23, 24, 25, 21, 17, 14, 14, 27, 16, 21, 25, 19, 28, 18, 22 Construct a 88% confidence interval for the mean number of cars sold per month by the population of car salespeople. S = || Margine of Error: E = cars We are 88% confident that, on average, car salespeople sell between and cars per month. Question Help: D Post to forum

The National Center for Education Statistics reported that 47% of college students work to pay for tuition and living expenses. Assume that a sample of 450 college students was used in the study. Provide a 95% confidence interval for the population proportion of college students who work to pay for tuition and living expenses. (to 2 decimals) Provide a 99% confidence interval for the population proportion of college students who work to pay for tuition and living expenses. (to 2 decimals) What happens to the margin of error as the confidence is increased from 95% to 99%? The margin of error becomes smaller or larger

The number of points held by a sample of the NHL's highest scorers for both the Eastern Conference and the Western Conference is shown below. Find a 95% confidence interval for the difference of the means. Eastern Conference: 83, 60, 75, 58,78, 59, 70, 58,62, 61, 59 Western Conference: 77, 59, 72, 58,37, 57, 66, 55,61,65