这说明在小样本下，研究参数的最短置信区间是必要的。
So it is necessary to research the shortest confidence interval of parameter for small samples.
通过引入可靠度的置信区间和置信度的概念，可以把结构分析中的随机参数转化为置信区间下的区间数。
Using concepts of the confidence interval and degree of confidence, random parameters in an engineering structure can be transferred into the interval Numbers.
导出在一定置信水平下控制置信区间宽度的样本量公式。
Sample size formulae that control the width of confidence interval with a certain confidence level are proposed.
基于左截断右删失数据下的乘积限估计构造了分位数固定宽度序贯置信区间及其估计，研究了序贯置信区间估计的渐近性质。
The Bahadur representations for this quantile estimator are established in order to derive asymptotic properties of the sequential fixed-width confidence intervals estimation for quantiles.
文中详细讨论了多个状态下二元正态分布均值和方差的无偏估计和置信区间估计。
Then it can establish the estimators of means and covariance matrix of the multivariate normal distribution, and estimate their confidence limits and intervals in each state.
文中详细讨论了多个状态下二元正态分布均值和方差的无偏估计和置信区间估计。
Then it can establish the estimators of means and covariance matrix of the multivariate normal distribution, and estimate their confidence limits and intervals in each state.
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