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