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Confidence Interval Problem: Cholesterol Concentration

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The cholesterol concentration in the yolks of each of a sample of 22 randomly selected eggs laid by free range chickens were found to have a mean value of 9.38 mg/g of yolk and a standard deviation of 1.62 mg/g. What is a 90% confidence interval estimate of the true standard deviation of the cholesterol concentration in these egg yolks?

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The expert examines the cholesterol concentration for confidence interval problems.

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Data
Sample Size 22
Sample Standard Deviation 1.62
Confidence ...

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