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Construction of fixed width confidence intervals for a Bernoulli success probability using sequential sampling: a simulation study

机译:使用顺序采样构造伯努利成功概率的固定宽度置信区间:模拟研究

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This article considers the construction of level 1 - α fixed width 2d confidence intervals for a Bernoulli success probability p, assuming no prior knowledge about p and so p can be anywhere in the interval [0, 1]. It is shown that some fixed width 2d confidence intervals that combine sequential sampling of Hall [Asymptotic theory of triple sampling for sequential estimation of a mean, Ann. Stat. 9 (1981), pp. 1229-1238] and fixed-sample-size confidence intervals of Agresti and Coull [Approximate is better than 'exact'for interval estimation of binomial proportions. Am. Stat. 52 (1998), pp. 119-126], Wilson [Probable inference, the law of succession, and statistical inference, J. Am. Stat. Assoc. 22 (1927), pp. 209-212] and Brown et al. [Interval estimation for binomial proportion (with discussion), Stat. Sci. 16 (2001), pp. 101-133] have close to 1 -α confidence level. These sequential confidence intervals require a much smaller sample size than a fixed-sample-size confidence interval. For the coin jamming example considered, a fixed-sample-size confidence interval requires a sample size of 9457, while a sequential confidence interval requires a sample size that rarely exceeds 2042.
机译:本文假设对于Bernoulli成功概率p而言,级别1-α固定宽度2d的置信区间的构造,假设没有关于p的先验知识,因此p可以位于区间[0,1]中。结果表明,一些固定宽度的2d置信区间结合了Hall的连续采样[三次采样的渐近理论,用于均值的顺序估计,Ann。统计9(1981),第1229-1238页]和Agresti和Coull的固定样本大小置信区间[对于二项式比例的区间估计,近似值优于“精确”值。上午。统计52(1998),第119-126页],威尔逊[可能的推论,继承法则和统计推论,J。统计副会长22(1927),第209-212页]和Brown等人。 [二项式比例的区间估计(有讨论),统计科学16(2001),第101-133页]具有接近1-α的置信度。这些顺序置信区间需要比固定样本大小的置信区间小得多的样本大小。对于所考虑的硬币阻塞示例,固定样本大小的置信区间要求的样本大小为9457,而连续置信区间的样本数很少会超过2042。

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