一个两参数有浴盆形状失效率的寿命分布的参数估计  

Parameter estimation for the two-parameter bathtub-shaped lifetime distribution

作　　者：王炳兴[1] 

机构地区：[1]浙江工商大学统计与数学学院,浙江杭州310018

出　　处：《高校应用数学学报（A辑）》2008年第4期408-414,共7页Applied Mathematics A Journal of Chinese Universities(Ser.A)

摘　　要：讨论了一个由Chen(2000)提出的两参数有浴盆形状失效率的寿命分布基于定数截尾样本的参数估计,导出了有关参数的逆矩估计量和参数的区间估计,并利用模拟方法研究了所给点估计的精度.还指出了Wu等(2005)提出的选择区间估计的最优准则是错误的.最后用一个实例说明本文所给的方法.This paper discusses the parameter estimation for the two-parameter bathtub-shaped lifetime distribution proposed by Chen (2000).The inverse moment estimators and confidence intervals for this lifetime distribution based on typeⅡcensored sample are given.A simulation study is performed to evaluate the performance of our proposed point estimations.It is pointed out that the optimal criteria proposed by Wu,et al.(2005) are incorrect.Finally,an example is given to illustrate the proposed procedures.

关 键 词：浴盆形状 失效率 点估计 区间估计 定数截尾样本 

分 类 号：O212.1[理学—概率论与数理统计]