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A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, xˉ is found t
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A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, xˉ is found t
A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, xˉ is found to be 111 , and the sample standard deviation, 5 , is found to be 10 . (a) Construct a 95% confidence interval about μ if the sample size, n, is 13 (b) Construct a 95% confidence interval about μ if the sample size, n, is 26 (c) Construct a 96% confidence interval about μ if the sample size, n, is 13 . (d) Could we have computed the confidence intervals in parts (a)-(c) if the population had not been normally distributed? Click the icon to view the table of areas under the t-distribution.
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