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When the sample size is changed from 2500 to 900, what is the effect on the std. error?

A. The new std error is 9/25 times the old error
B. The new std error is 3/5 of the old error
C. The new std error is 5/3 of the old error
D. The correct answer is not among the choices.
E. The new std error is 25/9 of the old error



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