本文介绍新药临床试验的中间分析和成组序贯试验。
This paper introduces the interim analysis and group sequential trials in clinical experimentations.
目前的序贯分析研究中，有两个假设检验问题涉及到了两次SPRT方法。
At present, there are two hypothesis test problems involved in two SPRTs in sequential analysis research.
结果证明，利用正态型序贯分析来确定林火的等级是可行的、可靠的，具有实用价值。
The result shows that it is feasible, dependable and practical to determine the rank of forest fire using the method of normally distribured sequential analysis.
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