b和c都适用F检验吗？

问题如下：

A chi-square test is most appropriate for tests concerning:

选项：

A.

a single variance.

B.

differences between two population means with variances assumed to be

equal.

C.

differences between two population means with variances not assumed to

be equal.

解释：

A is correct. A chi-square test is used for tests concerning the variance of a single

normally distributed population.