问题如下图：
选项：
A. 
B. 
C. 
解释：
提问：老师，这题我查了Z分布表，最接近0.99的这个数字不是0.9901，是0.8389诶。请问这个单尾的Z分布表是怎么看？谢谢指教。
菲菲_品职助教 · 2018年10月30日
同学你好，我选取了部分z分布表如下：
在图上我们就能找到对应的数0.9901，然后对应去找纵轴和横轴的数是2.33（纵轴是2.30，横轴对应0.03，所以加在一起就是2.33)。
我知道你为什么查错了，因为你在表上直接按纵轴0.90，横轴0.09去查表了对吧。但是我们要理解这个查表的方式，中间这些四位数的代表的就是概率，就是置信水平，即B选项的99%。所以我们要先在中间这些概率值里面找到跟0.99最接近的一个数，即0.9901，然后在对应横轴纵轴找到对应的z值。下次查表的时候要注意啦~
kevinzhu · 2019年11月10日
那我想问一下双尾检验的话取哪个数字？
NO.PZ2015120604000131问题如下Whiof the following scriptions is the least accurate about hypothesis testing?A.A Type II error refers to fail to rejewhen the null is false.B.A one-tailetest with a significanlevel of 1% hz-criticvalues of 2.58.C.One minus the probability of a Type II error equals the power of test .B is correct.A one-tailetest with a significanlevel of 1% hz-criticvalues of 2.332.33不应该是one-tailetest with significant level of 2%吗
NO.PZ2015120604000131问题如下 Whiof the following scriptions is the least accurate about hypothesis testing?A.A Type II error refers to fail to rejewhen the null is false.B.A one-tailetest with a significanlevel of 1% hz-criticvalues of 2.58.C.One minus the probability of a Type II error equals the power of test .B is correct.A one-tailetest with a significanlevel of 1% hz-criticvalues of 2.33 Type II error=1-power of test，这说的就是c吧，为什么c不对
NO.PZ2015120604000131问题如下Whiof the following scriptions is the least accurate about hypothesis testing?A.A Type II error refers to fail to rejewhen the null is false.B.A one-tailetest with a significanlevel of 1% hz-criticvalues of 2.58.C.One minus the probability of a Type II error equals the power of test .B is correct.A one-tailetest with a significanlevel of 1% hz-criticvalues of 2.33不懂B，容易搞混。麻烦详细说下。Z统计不都是双尾吗？为啥会有单尾的。另外，为啥用1%折合单尾0.5%，而不是2%
NO.PZ2015120604000131问题如下Whiof the following scriptions is the least accurate about hypothesis testing?A.A Type II error refers to fail to rejewhen the null is false.B.A one-tailetest with a significanlevel of 1% hz-criticvalues of 2.58.C.One minus the probability of a Type II error equals the power of test .B is correct.A one-tailetest with a significanlevel of 1% hz-criticvalues of 2.33老师，我是用排除法选的B，看了其他同学的问题和您的回复，99% a是0.01对应双尾是2.58，那单尾就是0.005？这怎么查出来的呢
NO.PZ2015120604000131 问题如下 Whiof the following scriptions is the least accurate about hypothesis testing? A.A Type II error refers to fail to rejewhen the null is false. B.A one-tailetest with a significanlevel of 1% hz-criticvalues of 2.58. C.One minus the probability of a Type II error equals the power of test . B is correct.A one-tailetest with a significanlevel of 1% hz-criticvalues of 2.33 POWER OF TEST 就是test 步骤三么 计算公式那步么。怎么理解C