1 . 某省高考改革试点方案规定:2023年高考总成绩由语文、数学、外语三门统考科目和思想政治、历史、地理、物理、化学、生物六门选考科目组成,将每门选考科目的考生原始成绩从高到低划分为
,
,
,
,
,
,
,
共8个等级,参照正态分布原则,确定各等级人数所占比例分别为
,
,
,
,
,
,
,
,选考科目成绩计入考生总成绩时,将
至
等级内的考生原始成绩,依照等比例转换法则,分别转换到
,
,
,
,
,
,
,
八个分数区间,得到考生的等级成绩,如果该省某次高考模拟考试物理科目的原始成绩
,那么
等级的原始分最低大约为( )
参考数据:对任何一个正态分布
来说,通过
转化为标准正态分布
,从而查标准正态分布表得到
.可供查阅的(部分)标准正态分布表:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8a5d766aad11b1c32dabf6e3eada26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2882b9baf240d68e92d67dabb12cd332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e194680eeb097a6b5f3b834d3b97688.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8caa734b124b6278bd4a5e522484428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7b40bdfb3886053cbcc7076ec0d5b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41a9e9bb3c6ddd2b1ab7d11f3113b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce364f3ee5161f09e39687f3e8b53b9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce364f3ee5161f09e39687f3e8b53b9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41a9e9bb3c6ddd2b1ab7d11f3113b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7b40bdfb3886053cbcc7076ec0d5b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8caa734b124b6278bd4a5e522484428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c601a1f38803fe4b55f984e552a91497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175e50796ba40cfa2e59114fa0336369.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e57ff4b2a51a53205079a0f6b5fb35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc623c4c3659db5ac097e75d1b9b2d4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5123492edf8de510cfb2a422bf374e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c68ed009b633967fe43494ee801d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25be4d66eb9c5185081443686f118545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2470c35cfe8265ec4cdcc71befbd2664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80914c4d48c673f39f8b2a518005dda9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a8a5d766aad11b1c32dabf6e3eada26.png)
参考数据:对任何一个正态分布
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1290917c2c835b61384480b335cc1d13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/606a7a4ce17d92cd3bca4bc9efb9a8fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333e52e2291c6daaf14675b5185bd4b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc4b27bf6783be534b99d59d3157c2cf.png)
1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 1.7 | 1.8 | 1.9 | |
0.8643 | 0.8849 | 0.9032 | 0.9192 | 0.9332 | 0.9452 | 0.9554 | 0.9641 | 0.9713 | |
2.0 | 2.1 | 2.2 | 2.3 | 2.4 | 2.5 | 2.6 | 2.7 | 2.8 | |
0.9772 | 0.9821 | 0.9861 | 0.9893 | 0.9918 | 0.9938 | 0.9953 | 0.9965 | 0.9974 |
A.57 | B.64 | C.71 | D.77 |
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