Obtain the values of e0rs and var0rs corresponding to the

Question

Obtain the values of E₀(r_s) and var₀(r_s) corresponding to the exact conditional null distribution of r_s for the case of n = 5 and the tied data considered in Comment 46. Compare these values with the corresponding values for E₀(r_s) and var₀(r_s) given in expressions (8.71) and (8.72) for the no ties setting. Discuss a possible reason for the difference in these null variances.