判断题

方差分析是通过分析数据的方差来确定我们是否能够推断出总体均值存在差异。()

答案：正确

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样本指标是随机变量，它只与给定的样本有关。()

答案：正确

单项选择题

As he had worked in the army as an electrical engineer for many years, he had every____ for the job.

A) privilege
B) obligation
C) qualification
D) quality