.抛掷一枚质地均匀的骰子所出现的点数的所有可能结果为Ω=1,2,3,4,5,6,记事件A=2,3,5
问题描述:
.抛掷一枚质地均匀的骰子所出现的点数的所有可能结果为Ω=1,2,3,4,5,6,记事件A=2,3,5
抛掷一枚质地均匀的骰子所出现的点数的所有可能结果为Ω=1,2,3,4,5,6,记事件A=2,3,5
B=1,2,4,5,6 求P(A)P(B)P(AB)P(A/B)是条件概率的题
答
∵Ω=1,2,3,4,5,6;A=2,3,5 ∴P(A)=3/6=1/2 ∵Ω=1,2,3,4,5,6; B=1,2,4,5,6 ∴ P(B)=5/6 ∵Ω=1,2,3,4,5,6;A=2,3,5;B=1,2,4,5,6 ∴P(AB)=1 P(A/B)= 1/3