InWilliamsvs.Florida, the Supreme Court compares twelve-man and six-man juries and claims that “there is no discernible difference between the results reached by the two different sized juries.” Walbert (1971) uses a simple probabilistic argument to refute the Court's opinion. Subsequently, Gelfand and Solomon (1974, p. 36) seem to contradict Walbert and side with the Court. This note reaffirms Walbert's result.