(Answered) The standard error of the sample mean is equal to 5 when

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The standard error of the sample mean is equal to 5 when n=25. If the sample size increases by a factor of four, how will the standard error change?

A. It will be double.
B. It will be cut in half.
C. It will quadruple.
D. It will be cut to 1/4 of 5. It will quadruple.

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