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According to WebMD in 2014, American orthopedists earn an average of $421,000 with standard deviation of $90,000. Let x be the mean earnings of a

According to WebMD in 2014, American orthopedists earn an average of $421,000 with standard deviation of $90,000. Let x be the mean earnings of a random sample of 200 American orthopedists. What is the mean of the sampling distribution of x =

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