If n=28, x¯(x-bar)=49, and s=4, construct a confidence interval at a 80% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. < μ <
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If n=28, x¯(x-bar)=49, and s=4, construct a confidence interval at a 80% confidence level. Assume the data came from a
Give your answers to one decimal place.
< μ <
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- The confidence interval for a population mean is (7.32, 7.52). What are the sample mean and the margin of error? H = Margin of Error = Give your answers as decimals, to two places.Find the critical t-value that corresponds to 70% confidence. Assume 7 degrees of freedom.Find the z critical value associated with 85% confidence.
- If n=15, ¯xx¯(x-bar)=39, and s=11, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population.Give your answers to one decimal place.Out of 300 people sampled, 135 received flu vaccinations this year. Based on this, construct a 95% confidence interval for the true population proportion of people who received flu vaccinations this year. Give your answers as decimals, to three placesIf n=29, x¯(x-bar)=31, and s=8, construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population.Give your answers to one decimal place.Use the given data to construct a confidence interval for the population proportion p of the requested level. =x53 , =n68 , confidence level 80% Round the answers to at least three decimal places.In each of Exercises, we have presented a confidence interval (CI) for the difference, µ1 - µ2, between two population means. Interpret each confidence interval. 99% CI is from -20 to 15.If n=24, (x-bar)=44, and s=18, 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.Find the critical values X7p and X2, for an 80% confidence when the sample size is 51.If n=31, (x-bar)=36, and S3D3, construct a confidence interval at a 95% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place.Translate the statement into a confidence interval. Approximate the level of confidence. In a survey of 1000 adults in a country, 78% think teaching is one of the most important jobs in the country today. The survey's margin of error is ±4%. **PLEASE give four decimal pointsSEE MORE QUESTIONSRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
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