问题如下图：
选项：
A. 
B. 
C. 
c选项大概是什么意思 a在假设检验过程中是不变的值？a在过程中确实定下了就不会改变为什么是错的 解释：
NO.PZ2018062016000128问题如下Whiof the following statements of the level of significanis correct? A.A level of significanis scribethe probability of the Type II error. B.A level of significanrepresents a risk of making Type I errors ring a hypothesis test. C.A level of significanca stable value ring a hypothesis test. B is correct. A level of significanis the probability of making Type I error, usually notethe Greek letter alphThe level of significanhusuvalues but not stable.如题
NO.PZ2018062016000128 前两个答案没看懂什么意思
是typer I error=criticvalue ？因为criticvalue 属于significance, 所以typer I 用来描述significance？
