设A、B 为随机变量,P(A) = a,P(B) = b,P(A + B) =

书海库2019-12-17  15

问题 设A、B 为随机变量,P(A) = a,P(B) = b,P(A + B) = c,A. a-b B. c-b C. a(1-b) D. a(1-c)

选项

答案B

解析提示:P(AB)=P(A-B)=P(A)-P(B)-P(AB)[img]/upload/tiku/190/2457407_1.jpg[/img]
转载请注明原文地址:https://ti.zuoweng.com/ti/eISNKKKQ