6.2 Margin of error and the confidence interval. A study of stress on the campus of your...
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6.2 Margin of error and the confidence interval. A study of stress on the campus of your university using the College Undergraduate Stress Scale (CUSS) reported an average stress level of 1123 (a higher score indicating more stress) with a margin of error of 43 for 95% confidence. The study was based on a random sample of 400 undergraduates.
- Give the 95% confidence interval.
- If you wanted 99% confidence for the same study, would your margin of error be greater than, equal to, or less than 43? Explain your answer.
Related Book For
Essentials Of Statistics For Business And Economics
ISBN: 9781305081598
7th Edition
Authors: David Anderson, Thomas Williams, Dennis Sweeney, Jeffrey Cam
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