问题如下图：
选项：
A. 
B. 
C. 
解释：
chi-square不是校验两个总体的吗 a选项怎么理解
NO.PZ2017092702000144问题如下 A chi-square test is most appropriate for tests concerning:A.a single variance.B.fferences between two population means with variances assumeto equal. C.fferences between two population means with variances assumeto not equal. A is correct. A chi-square test is usefor tests concerning the varianof a single normally stributepopulation.卡方检验适用于单个正态分布总体方差的检验。 请问卡方检验的知识点在哪一个reang
NO.PZ2017092702000144问题如下 A chi-square test is most appropriate for tests concerning:A.a single variance.B.fferences between two population means with variances assumeto equal. C.fferences between two population means with variances assumeto not equal. A is correct. A chi-square test is usefor tests concerning the varianof a single normally stributepopulation.卡方检验适用于单个正态分布总体方差的检验。 请一下B和C，用T还是用F？
NO.PZ2017092702000144 fferences between two population means with variances assumeto equal. fferences between two population means with variances assumeto not equal. A is correct. A chi-square test is usefor tests concerning the varianof a single normally stributepopulation. 卡方检验适用于单个正态分布总体方差的检验。 这也不是这章的题吧，为啥会在这里
NO.PZ2017092702000144 卡方检验sum of the squares of k inpennt stantarnormallt stribute 为什么不是B，假设他们的Varian相等，且是1？
