← 返回数学题库
369概率困难数值题long

Three-Layer Poisson-Binomial-Uniform Tower

题目

Let UUniform(0,1)U \sim \operatorname{Uniform}(0,1). Given UU, let NUPoisson(10U)N \mid U \sim \operatorname{Poisson}(10U). Given (N,U)(N, U), let XN,UBinomial(N,U)X \mid N, U \sim \operatorname{Binomial}(N, U).

Using iterated tower properties and Eve's law, find E[X]E[X] and Var(X)\operatorname{Var}(X).

解题计时

0:00

提交作答时记录,用于后续平均用时统计。

你的答案

E[X]

Var(X)