Based on the MLE . of N , t he interval estimation and test statistics of N are given.

并在极大似然估计的基础上给出了N的区间估计及检验统计量.

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In addition , we suggest two ways to establish the benchmark, sample - test - statistics and group decision.

计量基准的制定, 本文提出了抽样试验统计法和群体决策法两种方法.

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