Question: A behavioral science researcher wishes to test a null hypothesis about the difference between the means of two populations. (a) Would the researcher prefer that

A behavioral science researcher wishes to test a null hypothesis about the difference between the means of two populations.

(a) Would the researcher prefer that the standard error of the difference be relatively small or large? Why?

(b) If the size of one or both samples becomes larger, what happens to the standard error of the difference? Why?

(c) If the standard deviation of the individual scores in one or both populations becomes larger, what happens to the standard error of the difference? Why?

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