根据中心极限定律以及t分布,95%置信区间的范围基本等于:sample mean
ansi/asqc z1.4 -sample size code letters 第1页
fai-sample 全尺寸报告
sample size and aql
table Ⅰ: sample size code letters 表Ⅰ:样本量字码
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