《高中数学必修复习概率课件》由会员分享，可在线阅读，更多相关《高中数学必修复习概率课件（21页珍藏版）》请在金锄头文库上搜索。
1、Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.4、互斥事件和对立事件概率知识点：1、频率与概率的意义2、古典概型3、几何概型Evaluation only.Evaluation only
2、. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.一、基础知识归纳P(A)=有利于事件A的基本事件数基本事件总数1、古典概率定义当且仅当所描述的基本事件的 出现是等可能性时才成立设有n个基本事件，随机事件A包含m个基本事件，则事 件A的概率P(A)=m
3、/n. 对任何事件A：0P(A)1.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.2、简单概率事件关系互斥是对立的 条件.互斥事件：对立事件：不可能同时发生的两个事件叫做互斥事件.其中必
4、有一个发生的互斥事件叫做对立事件 .必要不充分Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.互斥事件与对立事件的联系与区别：1、两事件对立，必定互斥，但互斥未必对立2、互斥的概念适用于多
5、个事件，但对立概念只适用于两个事件3、两个事件互斥只表明这两个事件不能同时发生，即至多只能发生一个，但可以都不发生；而两事件对立则表明它们有且只有一个发生Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose P
6、ty Ltd.和事件A +B :表示事件A、B中至少有一个发生的事件.(1)当A、B是互斥事件时：(2)当A、B是对立事件时：求法： (1)直接法：化成求一些彼此互斥事件的概率的和；(2)间接法：求对立事件的概率.积事件A B : 表示事件A、B中同时发生的事件.对事件A，B，如果A(B)发生的概率与B(A)是否发生没有关系， 则称A，B互相独立. 若A，B互相独立，则P(AB)=P(A)P(B)，反之亦然. Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0
7、.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.（一）理解等可能事件的意义会把事件分成等可能基本事件理解古典概型的特点，掌握等可能事件的计算方法课堂练习Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with As
8、pose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.1. 抛掷掷一枚质质地均匀的硬币币，如果连连 续续抛掷掷1000次，那么第999次出现现正面 朝上的概率是（ ）B. C. D. A.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspos
9、e.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.2、某种彩票中奖几率为0.1，某 人连续买1000张彩票，下列说法 正确的是：（ ） A、此人一定会中奖 B、此人一定不会中奖 C、每张彩票中奖的可能性都相等 D、最后买的几张彩票中奖的可能性 大些Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profi
10、le 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.3 一批产品中，有10件正品和5件次品 ，对产品逐个进行检测，如果已检测到 前 3次均为正品，则第4次检测的产品仍 为正品的概率是（ ） A.7/12B. 4/15 C. 6/11 D. 1/3Evaluation only.Evaluation only. Created with Aspose.Slide
11、s for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.4、在去掉大小王的52张扑克中 ，随机抽取一张牌，这张牌是J 或Q的概率为_ Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5
12、.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.（二）了解几何概型的特点，会进行 简单的几何概型的计算方法5、在相距5米的两根木杆上系一条绳子 ，并在绳子上挂一盏灯，则灯与两端 距离都大于2米的概率为 _Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client P
13、rofile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.（三）会判断某两个事件是否为互斥事 件，进而判断它们是否为对立事件，了解两个互斥事件概率的加法公式 ，知道对立事件概率和为1的结论，会 用相关公式进行计算。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5
14、Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.6有一人在打靶中，连续射击2次，事 件“至少有1次中靶”的对立事件是（ ） A.至多有1次中靶 B.2次都中靶 C.2次都不中靶 D.只有1次中靶Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3
15、.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.7、甲、乙两人下棋，两人下和棋的概率 为 ，乙获胜的概率为 ，则甲获 胜的概率为_Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Cre
16、ated with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.8.图中有两个转盘.甲乙两人玩转盘游戏,规定 当指针指向B区域时,甲获胜,否则乙获胜. 在两种情况下甲获胜的概率分别是 _，_ Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client
