题目21、设X~N(3,22),求(1).P(2<x≤5):P(-4<x≤10);P(|>2),P(x>3(2)确定c使P{x>c)=P(x≤c)21、设X~N(3,22),求(1).P{2<x≤5}:P{-4<x≤10};P{|>2},P{x>3(2)确定c使P{x>c}=P{x≤c}题目解答答案
