A population that consists of 250 items has a mean of 37 and a standard deviation of 13. A sample of size 5 is taken at random from this population. The standard error of the sample mean equals (up to three decimal places):
A)13.00.
B)5.814.
C)2.600.
D)5.767.

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The Answer of A population that consists of 250 items has a mean of 37 and a standard deviation of 13. A sample of size 5 is taken at random from this population. The standard error of the sample mean equals (up to three decimal places):
A)13.00.
B)5.814.
C)2.600.
D)5.767.

A Population That Consists of 250 Items Has a Mean