了解情况 | 了解 | 不了解 |
人数 | 140 | 60 |
男 | 女 | 合计 | |
了解 | 80 | ||
不了解 | 40 | ||
合计 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc485c58dbd6e50bfb352030f4a1c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
![]() | 0.10 | 0.05 | 0.025 | 0.010 | 0.005 | 0.001 |
![]() | 2.706 | 3.841 | 5.024 | 6.635 | 7.879 | 10.828 |
无疲乏症状 | 有疲乏症状 | 总计 | |
未接种疫苗 | 100 | 20 | 120 |
接种疫苗 | |||
总计 | 160 | 200 |
![](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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)从接种疫苗的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
附
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3821f70c08c5180e9b3086d3c9610f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
0.150 | 0.100 | 0.050 | 0.025 | 0.010 | |
2.072 | 2.706 | 3.841 | 5.024 | 6.635 |
城市 | 哈尔滨 | 乌鲁木齐 | 昆明 | 贵阳 | 杭州 | 长春 | 兰州 | 银川 | 西宁 | 沈阳 |
海拔(米) | 146 | 654 | 1891 | 1071 | 7 | 237 | 1517 | 1112 | 2261 | 42 |
平均寿命 | 78.21 | 75.8 | 79.41 | 77.96 | 82.95 | 75.96 | 76.25 | 74.68 | 74.62 | 80.1 |
城市 | 呼和浩特 | 福州 | 郑州 | 西安 | 石家庄 | 太原 | 合肥 | 长沙 | 拉萨 | 成都 |
海拔(米) | 1063 | 88 | 109 | 397 | 82 | 786 | 24 | 81 | 3958 | 506 |
平均寿命 | 70.5 | 79.03 | 79.3 | 79.88 | 78.12 | 78.94 | 79.06 | 79.46 | 70.32 | 81.52 |
平均寿命超过78.5岁 | 平均寿命不超过78.5岁 | 合计 | |
海拔不低于500米 | |||
海拔低于500米 | |||
合计 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f452908e724c9966128657203147834.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc485c58dbd6e50bfb352030f4a1c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
0.10 | 0.05 | 0.025 | 0.010 | 0.005 | |
2.706 | 3.841 | 5.024 | 6.635 | 7.879 |
城市 | 哈尔滨 | 乌鲁木齐 | 昆明 | 贵阳 | 杭州 | 长春 | 兰州 | 银川 | 西宁 | 沈阳 |
海拔(米) | 146 | 654 | 1891 | 1071 | 7 | 237 | 1517 | 1112 | 2261 | 42 |
平均寿命 | 78.21 | 75.8 | 79.41 | 77.96 | 82.95 | 75.96 | 76.25 | 74.68 | 74.62 | 80.1 |
城市 | 呼和浩特 | 福州 | 郑州 | 西安 | 石家庄 | 太原 | 合肥 | 长沙 | 拉萨 | 成都 |
海拔(米) | 1063 | 88 | 109 | 397 | 82 | 786 | 24 | 81 | 3958 | 506 |
平均寿命 | 70.5 | 79.03 | 79.3 | 79.88 | 78.12 | 78.94 | 79.06 | 79.46 | 70.32 | 81.52 |
平均寿命超过78.5岁 | 平均寿命不超过78.5岁 | 合计 | |
海拔不低于500米 | |||
海拔低于500米 | |||
合计 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3821f70c08c5180e9b3086d3c9610f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eec11e4da23c6da47f5672a10a2efdf.png)
![]() | 0.10 | 0.05 | 0.025 | 0.010 | 0.005 |
![]() | 2.706 | 3.841 | 5.024 | 6.635 | 7.879 |
平均每天锻炼的时间/分钟 | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
人数 | 20 | 36 | 44 | 50 | 40 | 10 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9e8b4e1a5ec3b13973d8ed247d34a70.png)
(1)请根据上述表格中的统计数据填写下面的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b72fcdc709e77910cd36a26369648b3.png)
锻炼不达标 | 锻炼达标 | 总计 | |
男 | |||
女 | 20 | 110 | |
总计 |
(2)在“锻炼达标”的学生中,按男女用分层抽样方法抽出5人,进行体育锻炼体会交流.从参加交流的5人中,随机选出2人做重点发言,求这2位重点发言人恰好一男一女的概率.
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8ec200973736ac8bcd9aa633855d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
![]() | 0.10 | 0.05 | 0.025 | 0.010 |
![]() | 2.706 | 3.841 | 5.024 | 6.635 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
土地使用面积![]() | 1 | 2 | 3 | 4 | 5 |
管理时间![]() | 8 | 11 | 14 | 24 | 23 |
愿意参与管理 | 不愿意参与管理 | |
男性村民 | 140 | 60 |
女性村民 | 40 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
(2)完成下面的列联表,并判断是否有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc3e36a8ddec055b2164ae365daf1326.png)
愿意参与管理 | 不愿意参与管理 | 合计 | |
男性村民 | 140 | 60 | |
女性村民 | 40 | ||
合计 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7ccbd364d309e8c9f362f52dd53863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d62c04e0f2a67150282472119ccffb.png)
临界值表:
![]() | 0.050 | 0.010 | 0.001 |
![]() | 3.841 | 6.635 | 10.828 |
潜伏期(天) | |||||||
人数 | 600 | 1900 | 3000 | 2500 | 1600 | 250 | 150 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4f6d0c516aff43aec57ffa4e2a0826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e7d5b2cbcf749ea80f98c9eea0c4459.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b72fcdc709e77910cd36a26369648b3.png)
潜伏期 | 潜伏期 | 总计 | |
60岁以上(含60岁) | 150 | ||
60岁以下 | 30 | ||
总计 | 200 |
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3821f70c08c5180e9b3086d3c9610f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
0.150 | 0.100 | 0.050 | 0.025 | 0.010 | 0.005 | 0.001 | |
2.072 | 2.706 | 3.841 | 5.024 | 6.635 | 7.879 | 10.828 |
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/f0502862-ec34-459d-b948-d43ef0ae1d8f.png?resizew=310)
(1)根据这300个样本数据,得到学生每周平均体育运动时间的频率分布直方图(如图所示),其中样本数据的分组区间为:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99da65d02c13a7dc1624231302d09254.png)
(2)在样本数据中,有60名女生的每周平均体育运动时间超过4小时,请完成每周平均体育运动时间与性别列联表,并判断是否有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90198de4171921876c6a76f880377f46.png)
附:参考公式及临界值表:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9c3a380e9229f1f709f929f2cc03b3.png)
![]() | ![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() | ![]() |
日行步数不超过8千步 | 日行步数超过8千步 | 总计 | |
40岁以上 | 100 | ||
40岁以下(含40岁) | 50 | ||
总计 | 110 | 200 |
(2)根据列联表判断是否有95%的把握认为日行步数与居民年龄有关.
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3821f70c08c5180e9b3086d3c9610f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
![]() | 0.05 | 0.025 | 0.010 |
k0 | 3.841 | 5.024 | 6.635 |
消费金额(元) | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
人数 | 20 | 30 | 40 | 30 | 40 | 20 |
消费金额不少于![]() | 消费金额少于![]() | 总计 | |
年龄不小于![]() | ![]() | ||
年龄小于![]() | ![]() | ||
总计 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4687b58dea4ca5f1043b703f87407b37.png)
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc485c58dbd6e50bfb352030f4a1c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
![]() | ![]() | ![]() | ![]() |
![]() | ![]() | ![]() | ![]() |