The three conditions in Section 6.3 stay the same for both the one- sided and the two- sided tests. The total number of malignant cells must be 24, the number of concave cells is 21, and the number of round cells is 16. Thus, when Y = the number of concave malignant cells, C – R = Y/21 – 24 – Y / 16.
a. Find C – R when Y is 17.
b. Find C – R when Y = 9, Y = 10, and Y = 11. Notice that the two- sided test is not completely balanced; there is no count, Y, that exactly corresponds to C – R = –0.372. However, any Y ≤ 10 will satisfy C – R ≤ –0.372.