If n=30, ¯xx¯(x-bar)=43, and s=16, construct a confidence interval at a 98% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place.

Out of 500 people sampled, 95 had kids. Based on this, construct a 90% confidence interval for the true population proportion of people with kids.Give your answers as decimals, to three places

A student found that in a random sample of 300 people in a town, 105 play sports. Based on this sample, construct a 90% confidence interval for the population proportion of all people in the town who play sports.Give your answers as decimals, rounded to three decimal places.

In a random sample of 250 high school students, it was found that 85.2% (213) of them later graduated. Find the 95% and 98% confidence interval for the true proportion of all high school students who graduate. Compare the two proportions.

A poll reported that only 645 out of a total of 2029 adults in a particular region said they had a​ "great deal of​ confidence" or​ "quite a lot of​ confidence" in the public school system. This was down 5 percentage points from the previous year. Assume the conditions for using the CLT are met. Find an 80​% confidence interval and interpret it. The 80​% confidence interval for the proportion that express a great deal of confidence or quite a lot of confidence in the public schools is ____.

Out of 400 people sampled, 76 had kids. Based on this, construct a 90% confidence interval for the true population proportion of people with kids.Give your answers as decimals, to three places

Of 130 adults selected randomly from one town, 30 of them smoke. Construct a 90% confidence interval for the true percentage of all adults in the town that smoke.

The first pic is the question. Since the tutors are answering incorrectly more often, the second pic is an “example question”

Out of 200 people sampled, 50 had kids. Based on this, construct a 90% confidence interval for the true population proportion of people with kids.Give your answers as decimals, to three places

A Gallup survey of 2324 adults (at least 18 years old) in the U.S. found that 417 of them have donated blood in the past two years. Construct a 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years. Round your answer to three decimal places. Use Z = 1.645. Use the unrounded values in Excel to find the answers to #2, #3 and #4 1. Find the sample proportion of adults in the U.S. who have donated blood in the past two years. Round your answer to three decimal places. 2. The standard error for sample proportion has a value of V 3. The margin of error has a value of 4. Construct the 90% confidence interval for adults who have donated blood in the past t