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Suppose a researcher interested in obtaining an estimate of the average level of some enzyme in a certain human population takes a sample of 10 individuals determines the level of the enzyme in

Suppose a researcher, interested in obtaining an estimate of the average level of some enzyme in a certain human population, takes a sample of 10 individuals, determines the level of the enzyme in each, and computes a sample mean = 22. Suppose further it is known that the variable of interest is approximately normally distributed with a variance of 45. (a) Calculate 90% confidence limits for the population mean. (b) If 1% of the means were low indicating an anomaly or an irregularity, below what average enzyme level would a physician be concerned? (c) Ninety percent of the average enzyme levels are within the normal range, between what to average enzyme levels would be considered the normal range?

Aug 01 2020 View more View Less

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