单选题

A test statistic is best defined as the difference between the sample statistic and the value of the population parameter under H0 divided by the:

A、 sample standard deviation.
B、 standard error of the sample statistic.
C、 appropriate value from the t-distribution.

【正确答案】 B

【答案解析】

A test statistic is defined as the difference between the sample statistic and the value of the population parameter under H0 divided by the standard error of the sample statistic.