Question 1013012: A sample of 29 federally sentenced adult male prisoners had an average sentence of 9 years. Assume that, for federally sentenced adult male prisoners in this sample, the sample standard deviation of sentence length is 17 years. Compute a 90% confidence interval for the mean sentence length, , of all federally sentenced adult male prisoners.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A sample of 29 federally sentenced adult male prisoners had an average sentence of 9 years. Assume that, for federally sentenced adult male prisoners in this sample, the sample standard deviation of sentence length is 17 years. Compute a 90% confidence interval for the mean sentence length, , of all federally sentenced adult male prisoners.
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sample mean:: 9
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ME = 1.2816*17/sqrt(29) = 4.046
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90% CI:: 9-4.046 < u < 9+4.046
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Cheers,
Stan H.
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