Suppose that the mean of the sampling distribution for the difference in two sample means is 0. This tells us that
A) the two sample means are both 0.
B) the two sample means are equal to each other.
C) the two population means are both 0.
D) the two population means are equal to each other.

Question

Quizplus · Accepted Answer

The mean of the sampling distribution for the difference in two sample means being 0 suggests that, on average, there is no difference between the two sample means. This implies that the two population means from which the samples are drawn are equal to each other, not that the sample means or population means themselves are necessarily 0.

Suppose That the Mean of the Sampling Distribution for the Difference