设随机变量X~b(3,0.1),则P(X≥1)=?

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/30 00:17:51
设随机变量X~b(3,0.1),则P(X≥1)=?
x){nYz?e{013|Si ?QR&H ]v6QTU0rlL[Mz <[ C]ajʆֶzp%X-0mA@Y#sC<;[Z}}

设随机变量X~b(3,0.1),则P(X≥1)=?
设随机变量X~b(3,0.1),则P(X≥1)=?

设随机变量X~b(3,0.1),则P(X≥1)=?
P(x≥1) = 1-P(x<1) = 1-P(x=0)
而P(x=0)=(1-0.1)³=0.9³=0.729
∴P(x≥1)=1-0.729=0.271