According to the 2015 Physician Compensation Report by Medscape (a subsidiary of Web American orthopedists earned an average of $421,000 in 2014. Suppose that the mean a deviation of the 2014 earnings of all-American orthopedists are $421,000 and $90,000, r x be the mean earnings of a random sample of 200 American orthopedists. a). According to the Central Limit Theorem, what is the approximated distribution o mean X ?

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