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    Find confidence interval for variance and standard deviation

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    Please provide help with home work problems constructing 95% C.I.

    (a) Find confidence interval for the populaton variance is (round six decimals).
    (b) The confidence interval for the population standard deviation is?
    Round four decimal places
    You randomly select and measure 10 bottles of cough syrup, the results (in fluid ounces are shown.
    4.212, 4.298, 4.259, 4.243, 4.181, 4.209, 4.269, 4.244, 4.233, 4.237.

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    Solution Summary

    The solution provides detailed explanation how to find the confidence interval for the variance and standard deviation.