设随机变量X~N(1,3(上标2)),则P{-2≤ X ≤4}=______.(附:Ф(1) =0.8413)
设随机变量X~N(1,3(上标2)),则P{-2≤ X ≤4}=______.(附:Ф(1) =0.8413)
【正确答案】:答案是0.6826
Top