1.24 Since the Wald confidence interval for a binomial parameter is degenerate when t = 0...

1.24 Since the Wald confidence interval for a binomial parameter π is degenerate when t = 0 or 1, argue that the probability that the interval covers π cannot exceed

[1 - π" – (1 – π)"]; hence, the infimum of the coverage probability over 0 < π < 1 equals 0, regardless of n.