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As part of a water quality survey, you test the water hardness in several randomly...

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As part of a water quality survey, you test the water hardness in several randomly selected streams. The results are shown below. Construct a confidence interval for the population variance o2 and the population standard deviation o. Use a 99% level of confidence. Assume that the population has a normal distribution.n=17s = 12 grains per gallonWhat is the confidence interval for the population variance ??(Round to one decimal place as needed.)

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