In general, if the variance of the difference scores increases, what will happen to the value of the t statistic?
a. It will increase in magnitude (move farther toward the tail of the distribution).
b. It will decrease in magnitude (move toward 0 at the center of the distribution).
c. It will stay the same; the t statistic is not affected by the variance of the difference scores.
d. It may increase or may decrease; there is no consistent relationship between variance and the size of the t statistic.
B
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