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1 . 已知一个样本由三个
,三个
和四个
组成,则这个样本的标准差![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c7e7449010436e00dce3b6924a4258.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c7e7449010436e00dce3b6924a4258.png)
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2 . 在
中,已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c885e8032706feed854495e0f608aa04.png)
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3 . 中心极限定理是概率论中的一个重要结论.根据该定理,若随机变量
,则当
且
时,
可以由服从正态分布的随机变量
近似替代,且
的期望与方差分别与
的期望与方差近似相等.现投掷一枚质地均匀分布的骰子100次,利用正态分布估算骰子向上的点数为偶数的次数少于60的概率为______ .(保留小数点后四位)附:若随机变量
服从正态分布
,则
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a649bd2fccadc432792b19b362a24c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f491e9ac2b397ca730e6c42ce8acb13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ad63bb0a64b9199125a90126d6eb14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c1116ce7f5a1a7b57517276d5092fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c1116ce7f5a1a7b57517276d5092fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8b9ad2fcfff3dd546c5fdbedfe6238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bcc248a7770a16fa10fc4602d71e0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52a0d7ed4daf49155f454fc3dc60ad3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7761068ff270f6bde51274eab524f39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25786ac38a636ace234be9d0032bb8a8.png)
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4 . 某企业有两条生产某种零件的生产线,其中第 1 条生产线的生产效率是第 2 条生产线的生产效率的两倍.若第 1 条生产线出现废品的概率约为 0.015,第 2 条生产线出现废品的概率约为 0.018,将这两条生产线生产出来的零件混放在一起,这两条生产线是否出现废品相互独立.现从该企业生产的该零件中随机抽取一件,则该零件为废品的概率为_____________ .
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解题方法
5 . 直线l的方向向量为
,且l过点
,则点
到直线l的距离为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07fc23af804d75c5680f8a49c0434d01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187841b91fab4d2d7ed16399ddaf3fb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e90c4cb2cb66ad7f895c28fd3012a3.png)
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6 . 已知函数
,
,若
,且
,则
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2399c2a712a2890dcd0b195d3b9f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a5318249b7436089c0373fc6f38adf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57a1e4940da0a2c64abd3e01282db084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e3c99ca3d73d87d3fdbef88c859dd6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6442eb5bf7e2436747b9d7c7ea65b9.png)
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7 . 已知正方形
的边长为
,两个点
,
(两点不重合)都在直线
的同侧(但
,
与
在直线
的异侧),
,
关于直线
对称,若
,则
面积的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134c3d2c318a33a82da4134dd17fa57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10109d34ef06c3e721fd2c7128c5b9ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7393358bb94b0df78fd4e29223257e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902f97913e1af1e6c793f7edfe6b2114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6315136b2449842c9894529e25e3b445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9a99e6336047697901dd4a330ed634.png)
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2024-06-11更新
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984次组卷
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4卷引用:福建省龙岩市上杭县第一中学2024届高三下学期5月数学模拟试题
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8 . 在
中,已知
,
,
,若存在两个这样的三角形
,则
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7a3d679b4dae63575903387a76ce45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3578b63c5903089595bf324c809a997c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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9 . 点
为圆
上的动点,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259822ab64b8626f3893b8432673358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/245337d54a26beb62e5fb3fcc4d4db23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916bb2cc1b29574ff95b47567c59ee0c.png)
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2024-06-03更新
|
936次组卷
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2卷引用:福建省龙岩市上杭县第一中学2024届高三下学期5月数学模拟试题
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10 . 已知向量
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/049ce40d189d99e1311bdc959c6d71ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
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2024-05-12更新
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221次组卷
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2卷引用:福建省龙岩市上杭一中2023-2024学年高二下学期5月月考数学试卷