A survey found that out of a random sample of 161 workers, 110 said they were interrupted three or more times an hour by phone messages, faxes, etc. Find the lower bound limit of the 95% confidence interval of the population proportion of workers who are interrupted three or more times an hour. Round your answer to 3 decimal places.
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A survey found that out of a random sample of 161 workers, 110 said they were interrupted three or more times an hour by phone messages, faxes, etc. Find the lower bound limit of the 95% confidence interval of the population proportion of workers who are interrupted three or more times an hour.
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- A random sample of 100 employees at a company shows that 62 are female. Form a 90% confidence interval for the proportion of all employees who are female. The interval is 0.62 what margin of error? Round your answer to 3 decimal places.1Construct a 96% confidence interval if x=75 and n=200. Round your answers to 3 decimal places.
- In a recent year, 6% of cars sold had a manual transmission. A random sample of college students who owned cars revealed the following: out of 124 cars, 25 had manual transmissions. Estimate the proportion of college students who drive cars with manual transmissions with 90% confidence. Round intermediate and final answers to at least three decimal places.QuestionInsurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. They randomly survey 399 drivers and find that 285 claim to always buckle up. Construct a 83% confidence interval for the population proportion that claim to always buckle up. Use interval notation, for example, [1,5]
- In a random sample of 296 people, 179 said that they watched educational television. Find the upper bound limit of the 95% confidence interval of the true proportion of people who watched educational television. Round your answer to 3 decimal places.Out of 200 people sampled, 76 had kids. Based on this, construct a 90% confidence interval for the truepopulation proportion of people with kids.Give your answers as decimals, to three placesIn a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 337 trials, the touch therapists were correct 163 times. Using Emily's sample results, construct a 95% confidence interval estimate of the proportion of correct responses made by touch therapists. (round to 3 decimal places)
- In a sample of 360 adults, 266 had children. Construct a 95% confidence interval for the true population proportion of adults with children. Give your answers as decimals, to three placesInsurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. They randomly survey 406 drivers and find that 304 claim to always buckle up. Construct a 82% confidence interval for the population proportion that claim to always buckle up. Use interval notation, for example, [1,5]In a sample of 510 adults, 281 had children. Construct a 95% confidence interval for the true population proportion of adults with children. Give your answers as decimals, to three placesRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. FreemanMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman