Figure 4.

Contours of ${\theta }_{\mathcal{R}}$ given that the true (r _c,r _t) lies within the plausible region ${\mathcal{R}}_a$ for n ^∗=1000, p _c=0.3, p _t=0.236, and q _c=q _t=0.10. In panel A missing at random holds, so that the ${\mathcal{R}}_a$ is the singleton, {(1,1)} and for panels B, C, and D ${\mathcal{R}}_a$ is shown by the dotted ellipse. For panel B, the contour for $Z_{{\mathcal{R}}_a}=0$ is excluded from ${\mathcal{R}}_a$ and there exists a sample size for which the desired power is possible. For panel C, the contour for $Z_{{\mathcal{R}}_a}=0$ is tangent to the boundary of ${\mathcal{R}}_a$ and therefore ${\mathcal{R}}_a$ corresponds to the “infinite inflation boundary” and the desired power cannot be achieved. For panel D, the contour for $Z_{{\mathcal{R}}_a}=0$ crosses the boundary of ${\mathcal{R}}_a$ and the desired power cannot be achieved