PROBABILITY.pdf
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PROBABILITY.pdf
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InvestmentTools–ProbabilityProbabilityVisualizingSampleSpace2TreeDiagramSecondDieFormingCompoundEventsAnswer:Countthecombinationsthatyield7andaddtheindividualprobabilitiestofindtheprobabilityoftheeventA“Rollingaseven”P(A)=P
investmenttool-probability.ppt
InvestmentTools–ProbabilityProbabilityVisualizingSampleSpace2TreeDiagramSecondDieFormingCompoundEventsAnswer:Countthecombinationsthatyield7andaddtheindividualprobabilitiestofindtheprobabilityoftheeventA“Rollingaseven”P(A)=P
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PROBABILITY8.ppt
对平面上任意区域G,若p(x,y)可积,则定义二维均匀分布例3有实根等价于§二维连续型随机变量的边缘证:在例2中求边缘密度函数1课堂练习解:(1)由归一性定义.给定y,设对任意固定的正数h>0,极限命题设(X,Y)的概率密度为p(x,y),则推论条件密度为求X,Y的条件密度.例例例解:应首先把定义域画出来注意积分限,和积分变量.计算X的边缘密度时,应该是对y进行积分.此时,积分方向为纵向.积分上下限与x有关.例1(续)写条件密度函数的时候一定要写定义域2024/10/3假设区域G由x轴,y=x/2,x=2