衡阳师范学院学报
衡暘師範學院學報
형양사범학원학보
JOURNAL OF HENGYANG NORMAL UNIVERSITY
2011年
6期
146-147
,共2页
置信区间%正态总体%方差%x2分布
置信區間%正態總體%方差%x2分佈
치신구간%정태총체%방차%x2분포
confidence interval%normal population%variance%chi-square distribution
讨论了正态总体的均值已知时方差的区间估计．两种方法找到了不同的置信区间，通过举例和分析x2分布表，对这两个区间进行了甄别．
討論瞭正態總體的均值已知時方差的區間估計．兩種方法找到瞭不同的置信區間，通過舉例和分析x2分佈錶，對這兩箇區間進行瞭甄彆．
토론료정태총체적균치이지시방차적구간고계．량충방법조도료불동적치신구간，통과거례화분석x2분포표，대저량개구간진행료견별．
When the mean of a normal population is given, the confidence interval of this normal population is discussed. Two confidence intervals are found by different methods. From an example and the tabular of chi-square distribution, these two confidence intervals are discriminated.
