An experiment involves selecting a random sample of 275-middle managers at random for a study. One of the interest is determining their mean annual income. The sample mean is computed to be 38614 and the sample standard deviation is 1872. What is the standard error of the mean? O A. 6.807273 O B. 112.885847 OC.0.04848 O D. 20.627137

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Q: thank you so much I understand it now and it worked

A: Okay.

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