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设<img src=""https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1483602771096e85b16a2f22d4536bc34dd62bc3d03deimage96.png"">是来自总体<img src=""https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14836027711478af58d28e22e481d8bc27af217fbd660image97.png"">的简单随机样本,则<img src=""https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14836027711926dc0b5e91e154355ba7073dcd60573c2image98.png""> ,<img src=""https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14836027712284d523d24ccdd473786ded7e288cff158image99.png"">,<img src=""https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14836027712619c014dfb69c6439d8abb7ff9eed421e2image100.png"">,<img src=""https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14836027713047a06d09adf4a4a91aa67c28575a5b182image101.png"">中有（）个是<img src=""https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14836027713388651217f1a2c49e093cd61eba81554f4image102.png"" style=""font-size: 16.8px; line-height: 25.2px; background-color: rgb(255, 255, 255);"">的无偏估计量。
·4.0
·2.0
·1.0
·3.0

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出自：佳木斯大学语言治疗学

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