8.14c
A 95% confidence interval of 16.0 months to 51.2 months has been found for the mean duration of imprisonment, μ, of political prisoners of a certain country with chronic PTSD. a. Determine the margin of error, E. b. Explain the meaning of E in this context in terms of the accuracy of the estimate. c. Find the sample size required to have a margin of error of 12 months and a 99% confidence level. (Use o = 45 months.) d. Find a 99% confidence interval for the mean duration of imprisonment, μ, if a sample of the size determined in part (c) has a mean of 36.3 months. a. The margin of error is 17.6 months. (Type an integer or a decimal.) b. Choose the correct answer below. C A. One can be 95% confident that the minimum error made in estimating μ by x is as found in part (a). OB. One can be 95% confident that the interval 16.0 months to 51.2 months contains the mean duration of imprisonment, μ, of the prisoners. C. One can be 95% confident that the maximum error made in estimating μ by x is as found in part (a). D. The average duration of imprisonment is as found in part (a). c. The required sample size to have a margin of error of 12 months with a 99% confidence level is (Round up to the nearest whole number.) prisoners.
8.14c
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