题目
Which of the following test statistics is most appropriate for conducting the hypothesis test given below? H0: variance A=variance B where the test is based on two random independent samples from two normally distributed populations.
选项
A.t-statistic
B.z-statistic
C.F-statistic
D.chi-square
答案
C
解析
The test to compare variances of two normally distributed populations is F-statistic. 比较两个正态分布总体方差的检验是F统计量。