Teaching Large‐Sample Binomial Confidence Intervals

HIS article addresses the question of which largeT sample binomial confidence interval method to teach in elementary courses. Recently, Goodall (1995), Simon (1996), and the references therein, have discussed the merits of several large-sample systems of binomial intervals. Three of the systems considered in these articles are the z-interval, a “t-based interval,” and a continuity-corrected interval, the latter denoted by cinterval herein. The 95% nominal z limits are