刘同学2018-05-22 11:50:54

Which of the following statements about hypothesis testing is least accurate? A A type I error is to reject the null when it is actually true. B The significance level equals the probability of a Type I error. C A two-tailed test with a significance level of 5% has z-critical values of ±1.65. b有点不明吧，significance level 指的是两边的区域吧，可以定义为type1吗？