假设检验教学中一个问题的探讨

A debatable issue in hypothesis testing

在假设检验中,怎样选择原假设与备择假设,有人叙述为:"通常把希望得到的陈述视为备择假设",很多教师也是按此进行课堂教学的。我认为应该是把"不能轻易否定的"作为原假设,或者把"有充分依据才能肯定的"作为备择假设。且在有实际意义的检测中,原假设与备择假设的选取,与检测者的态度或希望无关,具有一定客观性,一般它们不能互换。

In a hypothesis testing, how to select the null hypothesis and alternative hypothesis, there is a convention as someone described by which can be sovled by regarding the statement desired as alternative hypothesis, many teachers adopted this idea in teaching class. However, 1 think it is more suitable to have ＂do not easily deny＂ as the original hypothesis,or ＂well-founded positive＂ as an alternative hypothesis. In the actual tests, the selection of the null hypothesis and alternative hypothesis has nothing to do with the attitude of person or hope, and they are not inter-changeable.