A laboratory in Alaska is interested in finding the mean chloride level for a healthy resident in the state. A random sample of 90 healthy residents hasa mean chloride level of100 mEq/L. If it is known that the chloride levels in healthy individuals residing in Alaska have a standard deviation of 43 mEq/L, find a 90% confidence interval for the true mean chloride level of all healthy Alaska residents. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) What is the lower limit of the  90% confidence interval?   What is the upper limit of the  90%confidence interval?

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.