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To estimate the mean age for a population of 4000 employees, a simple random sample of...

To estimate the mean age for a population of 4000 employees, a simple random sample of 40 employees is selected.

If the population standard deviation is 8.2 years, computer the standard error of the mean. (Round to one decimal place) Answer

What is the probability that the sample mean age of the employees will be within 2 years of the population mean age? (Round to four decimal places) Answer

math   Statistics-And-Probability   
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Answer #1

obtuloi -the population man -AF χ ut 2, we have 1, 965 0.876

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