A 95% confidence interval of 19.1 months to 48.7 months has been found for the mean duration of imprisonment, u, 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 =42 months.) d. Find a 99% confidence interval for the mean duration of imprisonment, u, if a sample of the size determined in part (c) has mean of 36.2 months. a. The margin of error is (Type an integer or a decimal.) months. b. Choose the correct answer below. O A. One can be 95% confident that the maximum error made in estimating u by x is as found in part (a). O B. One can be 95% confident that the minimum error made in estimating u by x is as found in part (a). O C. One can be 95% confident that the interval 19.1 months to 48.7 months contains the mean duration of imprisonment, u, of the prisoners. O 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. d. The 99% confidence interval for the mean duration of imprisonment, u, is from months to months. (Round to one decimal place as needed. Use ascending order.) y is

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.