![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b668b5c01e0b1a529cc4e3efb2e9057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adadf0e7138d0af3357c40a74dcdebfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d323e0d024b66c3cf85984ba55362b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520e7459cc0cbebd5464e89b3944a9c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d065069e9d09c9a8a77d9cb7dc7bffe3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 由线面平行求线段长度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448cbac9a1ef3de7538a6b30cdc39582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 柱体体积的有关计算 多面体与球体内切外接问题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927a2ea9c22d2f2e77ef7896790f49f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbefa07f3229becc02de4428d383f77d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 球的表面积的有关计算 多面体与球体内切外接问题
A.甲地:总体均值为3,中位数为4 | B.乙地:总体均值为1,总体方差大于0 |
C.丙地:中位数为2,众数为3 | D.丁地:总体均值为2,总体方差为3 |
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/fe47e4cf-6f6b-474e-b8ff-4d84b5a13989.png?resizew=335)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/30aa6a43-9543-49ee-ba01-0a8cd3955bd2.png?resizew=332)
A.甲同学的成绩的平均数大于乙同学的成绩的平均数 |
B.甲同学的成绩的方差大于乙同学的成绩的方差 |
C.甲同学的成绩的极差小于乙同学的成绩的极差 |
D.甲同学的成绩的中位数小于乙同学的成绩的中位数 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ae6558e11384a40f3a338b73385ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1131daac6c5ffd7ac219280817a132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3002f56900c2924bfd79fc3865b0a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0876215b2fd463d151523cd3c6b447.png)
A.年收入平均数大大增大,中位数一定变大,方差可能不变 |
B.年收入平均数大大增大,中位数可能不变,方差变大 |
C.年收入平均数大大增大,中位数可能不变,方差也不变 |
D.年收入平均数可能不变,中位数可能不变,方差可能不变 |
A.60 | B.80 | C.120 | D.180 |
【知识点】 抽样比、样本总量、各层总数、总体容量的计算解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9b42973c53907f09f2de384c42fc5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457e3fb6b5470198653393f335e9d49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/330f1c061148d834ef1f59835f51d848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ccc546de1df8f7a6c9e201ea9c2fcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495698ec4b359463786eda51182588e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258fad62c1ee3591259f0fbdb697f3c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.2,![]() | B.4,![]() | C.4,![]() | D.2,1 |
【知识点】 计算几个数的平均数解读 计算几个数据的极差、方差、标准差
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/f4c072d7-508d-4b8e-8fd7-556b3fd9a9f7.png?resizew=194)
A.63、64、66 | B.65、65、67 |
C.65、64、66 | D.64、65、64 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
A.甲同学:平均数为![]() ![]() |
B.乙同学:平均数为![]() ![]() |
C.丙同学:中位数为![]() ![]() |
D.丁同学:众数为![]() ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ba67ef712204235bdf93a9d96f2ea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2565d4c185f676c8db5b4a2b07c73fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58731fdb875489abcb31d1f17b622d85.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 古典概型的概率计算公式 计算古典概型问题的概率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5db9fa0bc36e2308bd3eecd5e78351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93dece71310a273ffe0790fb2c46f415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 事件的独立性
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 古典概型的概率计算公式 计算古典概型问题的概率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d9dda3f78cf019fe88de7dbf7f1554.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d77c31d95b2e5423d8677ad4336626.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a60e4ff740be55ce1d47920816490907.png)
其中正确的有( )
A.0个 | B.1个 | C.2个 | D.3个 |
【知识点】 计算古典概型问题的概率
A.① | B.②④ | C.③ | D.①③ |
【知识点】 对立事件 确定所给事件的对立关系解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b96bdf51785d5d15292d6a194881ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe35c91649a5bea2518387a2b36e0c0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d86ed5700cde027ca83174d9c10292.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c848f689e35dfd74f499e6e0437df1d3.png)
A.![]() | B.-![]() | C.![]() | D.-![]() |
A.运动员甲射击一次,“射中9环”与“射中8环” |
B.甲、乙两名运动员各射击一次,“甲射中10环”与“乙射中9环” |
C.甲、乙两名运动员各射击一次,“甲、乙都射中目标”与“甲,乙都没有射中目标” |
D.甲、乙两名运动员各射击一次,“至少有1人射中目标”与“甲射中目标但乙未射中目标” |
【知识点】 判断所给事件是否是互斥关系解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若存在实数![]() ![]() ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff897dd924432c4664e32778f75b87c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf039c46a25e331446c6ee1e9af3c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
【知识点】 复数的分类及辨析解读 判断复数对应的点所在的象限
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990b4e6a33c821c298dec22cf9fbf76e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7fb4bb4caccf79639a126064771da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/f84c9656-0b0b-4d31-8a10-c0f89f7a15bc.png?resizew=161)
A.直线![]() ![]() |
B.![]() |
C.直线![]() ![]() ![]() |
D.三棱锥![]() ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4b17ce6e90cd3810a3696262e94c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/c8e4783f-65eb-4a38-a08b-115bf1c107f1.png?resizew=189)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若直线![]() ![]() ![]() ![]() |
D.若平面![]() ![]() ![]() ![]() ![]() ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad1a56baf43ffdf67bc8460856e31fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() |
【知识点】 多面体与球体内切外接问题 由线面平行求线段长度
【知识点】 空间中的点(线)共面问题
已知圆锥的顶点为,母线
,
所成角的余弦值为
,
与圆锥底面所成角为45°,若
的面积为
,则该圆锥的侧面积为
【知识点】 圆锥表面积的有关计算 由线面角的大小求长度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fbc8922aa9a21de67b1555f389b519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea3dd56525eb78320917e7d505b3640a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff2921ca5f93f46bcb41c25dd17c7da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24acc59e9b9aefe624f00d094e300b52.png)
【知识点】 根据方差、标准差求参数
【知识点】 抽样比、样本总量、各层总数、总体容量的计算解读
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce7c9333b595345225d8a1925e4d581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cce7c9333b595345225d8a1925e4d581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3de0c6acda55e1da3d9a3da60b63d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c800b6aabdc453e2c7e343061e9c6a78.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/c4a92124-8a94-423b-8730-4e0e26fd6676.png?resizew=176)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442beba7ef17d73029f5aeff3d944c04.png)
(2)求对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d90b642de30db1d487a2707921edf4b.png)
【知识点】 求点面距离 线面垂直证明线线垂直
分组 | 频数 | 频率 |
[10,15) | 10 | 0.25 |
[15,20) | 24 | n |
[20,25) | m | p |
[25,30] | 2 | 0.05 |
合计 | M | 1 |
![](https://img.xkw.com/dksih/QBM/2017/1/18/1826262741139456/1826262741196800/STEM/b552cc023f2b4aa094e1c83e0c8d3688.png)
(1)求出表中M,p及图中a的值;
(2)若该校高三学生有240人,试估计该校高三学生参加社区服务的次数在区间[10,15)内的人数;
(3)估计这次学生参加社区服务人数的众数、中位数以及平均数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c6c7567972273b4ba733b47bf9d5408.png)
(1)假设甲、乙、丙三人同时进行理论与实际操作两项考试,谁获得合格证书的可能性最大?
(2)这三人进行理论与实际操作两项考试后,求恰有两人获得合格证书的概率.
(1)若从这6个国家中任选2个,求这2个国家都是亚洲国家的概率;
(2)若从亚洲国家和欧洲国家中各选1个,求这两个国家包括A1,但不包括B1的概率.
【知识点】 计算古典概型问题的概率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(Ⅰ)求“抽取的卡片上的数字满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4e94d78949138071e0c9994de12c81.png)
(Ⅱ)求“抽取的卡片上的数字
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
【知识点】 计算古典概型问题的概率