Figure 7.25 shows two pairs of distributions, A and B, with each pair drawn from the same population of means.

• In Pair A, the distribution on the left has 25 sample means (N = 100), and the one on the right has 100 sample means (N = 100).

• In Pair B, the distribution on the left has 200 sample means (N = 40), and the one on the right has 200 sample means (N = 100).

Which pair, A or B, is on the top? Which pair, A or B, is on the bottom? Explain how you know.