Two graduate students recently completed their dissertations. Each used a t-test for two independent groups. One found a significant t using 15 participants per group. The other found a significant t...

Two graduate students recently completed their dissertations. Each used a t-test for two independent groups. One found a significant t using 15 participants per group. The other found a significant t of the same magnitude (ie the t-statistics were the same size) using 55 participants per group.

a) Which result impresses you the most? Why?

b) Draw a diagram of overlapping distributions (analogous to Figure 12.1) to defend your answer.

Figure 12.1