| 概率在"抓阄"问题中的应用 |
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| 引用本文： | 戴莹,高伟.概率在"抓阄"问题中的应用[J].渤海大学学报(自然科学版),2006,27(3):247-248. |
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| 作者姓名： | 戴莹 高伟 |
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| 作者单位： | 渤海大学,教育学院;渤海大学,数学系,辽宁,锦州,121013 |
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| 摘 要： | 概率的知识与日常生活联系非常紧密,“抓阉”的方法在生活中被广泛应用,抓阄的结果是一随机现象,其合理性说明每个人“中阄”的可能性是相等的。从生活中“抓阄”这一实际问题出发,通过构造概率中的摸球模型,从解决特殊问题入手,遵循从特殊到一般的原则,把特殊结论推广到一般形式,并从全概率、古典概型、按比例摸球等角度,用四种不同方法揭示生活中的“抓阄”问题的公正性：抓阉不分先后,其概率相等。
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| 关 键 词： | 概率 摸球模型 抓阄 公正性 |
| 文章编号： | 1673-0569(2006)03-0247-02 |
| 收稿时间： | 02 24 2006 12:00AM |
| 修稿时间： | 2006年2月24日 |
Application of probability in "Zhuajiu"(drawing lots) |
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| DAI Ying,GAO Wei.Application of probability in "Zhuajiu"(drawing lots)[J].Journal of Bohai University:Natural Science Edition,2006,27(3):247-248. |
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| Authors: | DAI Ying GAO Wei |
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| Institution: | 1. College of Education, Bohai University, jinzhou, 121013, China; 2. Department of Mathematics ,Bohai University ,Jinzhou 121013 ,China |
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| Abstract: | Probability is closely related to daily life. "Zhuajiu"(drawing lots)is extensively used in daily life,whose result is radom.Everyone has an equal chance in getting the "lots".Starting from "drawing lots"in daily life,a general conclusion adout probability is made by way of feeling-for-the-right-ball-from-a-bag model of probability.Thus the fairness-equal chance for everyone-of daily-life "drawing lots"is revealed by means of total probability,classicel model of probability and feeling-for-the-right-in-proportion model,and so on so forth. |
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| Keywords: | probability feeling-for-the-right-ball-from-a-bag model "Zhuajiu"(drawing lots) fairnsee |
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