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Chloride level of all healthy floridaresidents

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A laboratory in Florida is interested in finding the mean chloridelevel for a healthy resident in the state. A random sample of 60 healthy residents has a mean chloride level of 98 mEq/L. If it isknown that the chloride levels in healthy individuals residing inFlorida have a standard deviation of 40 mEq/L, find a 90% confidence intervalfor the true mean chloride level of all healthy Floridaresidents.

What are the lower and upper limits of the 90% confidence interval?

Reference no: EM131152851

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