An Experiment Involves Selecting a Random Sample of 256 Middle

question 16

Multiple Choice

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?

• A) $128.125
• B) $138.36
• C) $2,050
• D) $8.01
• E) None of the choices are correct

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