General expressions for E(BW) and Var(BW) are provided in (15.28) and (15.29), respectively, in Comment 11.
(a) Simplify these expressions for the setting of common set size k = q = 2 and the same number of observations from each population (i.e., common cycle size c = d).
(b) For the setting in part (a) under the assumption of perfect rankings, show that the null H0: ? = 0 mean and variance for BW are given by:
