题目内容
抽样平均误差同样本单位数的多少成正比，而与总体变异程度的大小无关。
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在其他条件相同的情况下，重复抽样的抽样平均误差一定比不重复抽样的抽样平均误差大。
抽样估计中的抽样误差（）
抽样推断的特点是（）
1.The movie directed by a not-very-famous director has ___________ all box office records.2.The contest is open to ___________ athletes as well as professional ones.3.The great disaster has proved the truth that law of nature will _________ itself.4.As he was ________ with us, so are we kind with him.5.We shall be pleased if you can ________ us with an easier access to the Internet.
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