If the mean of the distribution of differences were to equal -6.00, this would indicate that
A) the standard deviation of the distribution is a function of the range
B) the samples probably represent different populations
C) the samples were probably selected from a single population
D) none of these, since the mean can never be negative

Question

Quizplus · Accepted Answer

The mean of the distribution of differences being -6.00 suggests that there is a systematic difference between the groups being compared, implying that the samples likely come from different populations.

If the Mean of the Distribution of Differences Were to Equal