Figure 5.

Power Curves

Assuming the selective model described in the text, the exact power of the exact test and the asymptotically derived power of the asymptotic tests were computed for both (A) X₁² and (B) X₄² for 50 values of s ranging from 0 to 1. The dashed curves show exact power, and the solid curves show asymptotically estimated power. Violet, red, blue, black, and green curves are calculated with the use of n = 50, 200, 1000, 1480, and 3000, respectively.