Mathematics, 26.07.2019 13:00, nev322

An experiment involves selecting a random sample of 256 middle managers at random for study. one item of interest is their mean annual income. the sample mean is computed to be $35,420 and the sample standard deviation is $2,050. what is the standard error of the mean?

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An experiment involves selecting a random sample of 256 middle managers at random for study. one ite...