| 正态总体中方差的两步置信区间 |
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| 引用本文： | 王海贤,曾建军,陈桂景.正态总体中方差的两步置信区间[J].应用概率统计,2003,19(2):118-124. |
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| 作者姓名： | 王海贤 曾建军 陈桂景 |
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| 作者单位： | 安徽大学数学系,合肥,230039 |
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| 基金项目： | Fund of National Nature Science(No.19971001)of China |
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| 摘 要： | 利用两阶段抽样，我们具体给出了正态总体方差的一个置信区间，它同时满足可靠度与精度。利用数值计算的方法，我们计算出第一阶段的最优抽样量。此外，我们证明了一次抽样时同时满足可靠度与精度的置信区间的不存在性。
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| 关 键 词： | 置信区间 序贯置信区间 两步置信区间 dl－一致连续 |
Two-Stage Confidence Intervals for the Variance of a Normal Distribution |
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| Abstract.Two-Stage Confidence Intervals for the Variance of a Normal Distribution[J].Chinese Journal of Applied Probability and Statisties,2003,19(2):118-124. |
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| Authors: | Abstract |
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| Abstract: | In this paper, we concretely design a fixed-width confidence interval for the variance σ2 of a normal dis-tribution N(μ, σ2) by two-stage procedures and provide the optimal sample size of the first stage by numericalcomputations. Moreover, for fixed samples, we establish a proof for the non-existence of fixed-width confidenceinterval for σ2. |
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| Keywords: | Confidence interval sequential confidence intervals two-stage confidence intervals uniformly continuous |
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