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Question: 21 in the course of designing theater seats the sitting...

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21. In the course of designing theater seats, the sitting heights (in mm) of a simple random sample of adult women is obtained, and the results are listed below. Use the sample data to construct a 99% confidence interval estimated of σ, the population standard deviation of sitting heights of all women. Round to the nearest thousandth of a millimeter.

849 807 821 859 864 877 772 848 802 807 887 815

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