Exact Group Sequential Methods for Estimating a Binomial Proportion

Table 2

Coverage tuning parameter.

	𝑠=3	𝑠=4	𝑠=5	𝑠=6	𝑠=7	𝑠=8	𝑠=9	𝑠=10
𝜀=0.1	2.6583	2.6583	2.5096	2.5946	2.4459	2.6512	2.5096	2.4459
𝜀=0.05	2.6759	2.6759	2.6759	2.6759	2.6759	2.6759	2.6759	2.6759
𝜀=0.02	2.6725	2.6725	2.6725	2.6725	2.6725	2.6725	2.6725	2.6725
𝜀=0.01	2.6796	2.6796	2.6796	2.6796	2.6796	2.5875	2.6796	2.6796