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Statistics and Probability

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Estimated Standard Error

STATS-GAV0HY

You take a random sample of 30 and find that the estimated standard error of the mean is 10.

What would you do to reduce the standard error of the mean to 5?

A

Increase the sample size to 150.

B

Increase the sample size to 120.

C

Decrease the sample size to 50.

D

Decrease the sample size to 25.