When testing for differences between treatment means, a confidence interval is based on
A) the mean square error.
B) the standard deviation.
C) the sum of squared errors.
D) the standard error of the mean.

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The Answer of When testing for differences between treatment means, a confidence interval is based on
A) the mean square error.
B) the standard deviation.
C) the sum of squared errors.
D) the standard error of the mean.

When Testing for Differences Between Treatment Means, a Confidence Interval