Question

An experiment involves selecting a random sample of 300 middle managers for study. One item of interest is their annual income. The sample mean is computed to be $35,420. If the population standard deviation is $2,788, what is the standard error of the mean?

Answer #1

Solution :

Given that,

mean = = $35420

standard deviation = = $2788

n=300

standrad error== = / n = 2788 / 300 = 16.0965

standrad error== = 16.0965

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