A、<img src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/f99c1d2c-a1c7-475e-8808-aa3f448437a8.png" width="61" height="25">
B、<img src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/72a14311-ed4b-4725-b50c-ba4716dc1e55.png" width="53" height="37">
C、<img src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/6176e50f-5662-474a-a887-8ed55a1cb7c5.png" width="43" height="41">
D、<img src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/d211526f-5901-4662-a10d-791ede469142.png" width="64" height="41">
E、<img src="https://static.tiw.cn//s/tiw/p3/UpLoadImage/2013-05-07/4006ba01-9c36-417c-ab61-4eb86f49bb8e.png" width="60" height="45">
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试题解析
本题考点是样本率的标准误的计算。