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The mean age of employees at a large corporation is 41.7 years with a standard deviation...

The mean age of employees at a large corporation is 41.7 years with a standard deviation of 2.9 years. Random samples of 25 are drawn from this population and the mean of each sample is determined. Find the mean of the sample mean.

Math   Statistics-And-Probability   
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Answer #1

Solution :

Given that ,

mean = = 41.7

standard deviation = = 2.9

n = 25

The mean of the sample mean

=   = 41.7 and

Sample standard deviation

= / n = 2.9 / 25 = 0.58

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