名校
1 . 在一次
公里的自行车个人赛中,25名参赛选手的成绩
单位:分钟
的茎叶图如图所示,现将参赛选手按成绩由好到差编为
号,再用系统抽样方法从中选取5人,已知选手甲的成绩为85分钟,若甲被选取,则被选取的其余4名选手的成绩的平均数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/3f419853-013e-426a-9200-d48c02c63174.png?resizew=191)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590eca6d769b1000e591092e44bd0fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264261a50a9348f64c03b6e2af2c61af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/3f419853-013e-426a-9200-d48c02c63174.png?resizew=191)
A.95 | B.96 | C.97 | D.98 |
您最近一年使用:0次
2019-03-12更新
|
361次组卷
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3卷引用:【市级联考】湖南省湘潭市2019届高三上学期第一次模拟检测数学(文)试题