The American Heart Association is about to conduct an anti-smoking campaign and wants to know the fraction of Americans over 33 who smoke.  step 2 of 2: suppose a sample of 1267 Americans over 33 is drawn. Of these people, 913 don't smoke. Using the data, construct the 98% confidence interval for the population proportion of Americans over 33 who smoke. Enter your answer as a decimal number rounded to three decimal places.

A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=935 and x=561 who said "yes." Use a 95% confidence level.

Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics class go through life feeling more enriched. For some reason that she can't quite figure out, most people don't believe her. You decide to check this out on your own. You randomly survey 64 of her past Elementary Statistics students and find that 34 feel more enriched as a result of her class. Construct a 95% confidence interval for the true mean or proportion. Round to the nearest hundredth (2 decimal places). (  ,  )

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According to recent data by the American Marketing​ Association, 76.5​%of people in the​ 18-24 age group used social media in 2017. You want to find out what the social media proportion is among your classmates who are all between 18 and 24 years old. Suppose you obtain a random sample of 229 students and find that 202 students in this sample are active social media users. Complete parts a through c below.   a. Construct a 99​% confidence interval to estimate the actual proportion of social media users. A 99​% confidence interval to estimate the actual proportion has a lower limit of------ and an upper limit of------- ​(Round to three decimal places as​ needed.) b. What is the margin of error for this​ sample? c. Is there evidence that this proportion matches that of the overall population based on the​ sample?

In a recent poll, 350 people were asked if they liked dogs, and 41% said they did. Find the Margin of Error for this poll, at the 95% confidence level. Give your answer to four decimal places if possible.

In a recent poll, 290 people were asked if they liked dogs, and 61% said they did. Find the Margin of Error for this poll, at the 90% confidence level. Give your answer to four decimal places if possible.

In a survey of 356 people who attended a local professional soccer teams most recent home game, 135 said that they were fans of the visiting team. Create a 95% confidence interval for the population proportion of attendees who were fans of the visiting team. Round your answer to 3 decimals places

In a survey of 2111 adults in a recent​ year, 1244 say they have made a New​ Year's resolution.Construct​ 90% and​ 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. How exactly do you go about doing this