If the two means differ greatly between control and treatment groups, the difference is very likely to be statistically significant only if
A) the hypothesis is false.
B) the sample size is large.
C) the experimental result is practically significant.
D) the experimental result is not practically significant.

Question

Quizplus · Accepted Answer

When the two means differ greatly, statistical significance depends on the sample size. If the sample size is large enough, even small differences between groups can be statistically significant. Therefore, choice B is the best answer. Choices A, C, and D do not address the issue of sample size.

If the Two Means Differ Greatly Between Control and Treatment