According to a study of political prisoners, the mean duration of imprisonment for 32 prisoners with chronic post-traumatic stress disorder (PTSD) was 30.6 months. Assuming that a = 36 months, determine a 95% confidence interval for the mean duration of imprisonment, μ, of all political prisoners with chronic PTSD. Interpret your answer in words. Click here to view Page 1 of the table of areas under the standard normal curve. Click here to view Page 2 of the table of areas under the standard normal curve.

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