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arXiv 1903.03327stat.ME
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两个二项比例差的一个新的精确置信区间

A New Exact Confidence Interval for the Difference of Two Binomial Proportions

Wojciech Zieliński

摘要:

本文考虑两个二项比例之差的区间估计。构造这样的区间的若干方法是已知的。不幸的是,这些置信区间具有较差的覆盖概率:它显著小于标称置信水平。本文提出了一种新的置信区间。该构造仅需要关于样本量和比例之间的样本差的信息。拟定置信区间的覆盖概率至少为标称置信水平。通过一个医学实例说明了新的置信区间。

英文摘要:

We consider interval estimation of the difference between two binomial proportions. Several methods of constructing such an interval are known. Unfortunately those confidence intervals have poor coverage probability: it is significantly smaller than the nominal confidence level. In this paper a new confidence interval is proposed. The construction needs only information on sample sizes and sample difference between proportions. The coverage probability of the proposed confidence interval is at least the nominal confidence level. The new confidence interval is illustrated by a medical example.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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