名校
1 . 画出解关于
的不等式
的程序框图,并用语句描述.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c4ba0503f6f326eb8cf77f3c239c0ff.png)
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2018-06-01更新
|
264次组卷
|
3卷引用:河南省南阳市第一中学2018-2019学年高一下学期第三次月考数学试题
2 . 《哪吒之魔童降世》于
年
月
日在中国上映,据统计,
年
月
日
点
分,《哪吒之魔童降世》超《流浪地球》,升至中国影史票房榜第二位.某电影院为了解观看该影片的观众的年龄构成情况,随机抽取了
名观众,得到如下的频数统计图.
![](https://img.xkw.com/dksih/QBM/2019/11/7/2328841898680320/2329492624924672/STEM/938456f2376b40b1a1cc8d599d8f884c.png?resizew=250)
(1)估计所调查的
名观众年龄的平均数和中位数;
(2)在上述
名观众中,若从年龄在
的范围内选出
人进行观后采访,求这
人至少有
人的年龄在
的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f95463e4696bcb6ed28581bad689d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c696d722e1b4b938c7a956ff83f733bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f95463e4696bcb6ed28581bad689d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34584b79ec2246f47aeed8855d2762c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b184c94e38f1e5dbe750b2168c2a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b184c94e38f1e5dbe750b2168c2a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
![](https://img.xkw.com/dksih/QBM/2019/11/7/2328841898680320/2329492624924672/STEM/938456f2376b40b1a1cc8d599d8f884c.png?resizew=250)
(1)估计所调查的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
(2)在上述
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beddaa21c01923f671d5b66eb76a7f63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627a86a6ccc6968f95c9e26db5c4b80d.png)
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3 . 为评估设备
生产某种零件的性能,从设备
生产该零件的流水线上随机抽取100个零件为样本,测量其直径后,整理得到下表:
经计算,样本的平均值
,标准差
,以频率值作为概率的估计值.
(I)为评判一台设备的性能,从该设备加工的零件中任意抽取一件,记其直径为
,并根据以下不等式进行判定(
表示相应事件的概率):①
;②
;③
.判定规则为:若同时满足上述三个式子,则设备等级为甲;若仅满足其中两个,则等级为乙;若仅满足其中一个,则等级为丙;若全部都不满足,则等级为丁.试判断设备
的性能等级.
(Ⅱ)将直径尺寸在
之外的零件认定为是“次品”,将直径尺寸在
之外的零件认定为“突变品”.从样本的“次品”中随意抽取两件,求至少有一件“突变品”的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
直径/mm | 58 | 59 | 61 | 62 | 63 | 64 | 65 | |
件数 | 1 | 1 | 3 | 5 | 6 | 19 | 33 | |
直径/mm | 66 | 67 | 68 | 69 | 70 | 71 | 73 | 合计 |
件数 | 18 | 4 | 4 | 2 | 1 | 2 | 1 | 100 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4749fa075f420cb3dc00adefa72c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa501d3a78f2ed95e14909fe3c1ad908.png)
(I)为评判一台设备的性能,从该设备加工的零件中任意抽取一件,记其直径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99d34ecb7275f311a09fc93bc4923ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26971120fb58926625d06e5c4082eab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ae640c7513b62d833668be0d3e6f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(Ⅱ)将直径尺寸在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72897252b1ff09ffacd70571e9b6f383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029c6688ee47babd2c4538a8303fbbb0.png)
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