已知X~B(n,p),EX=8,DX=1.6,则n与p的值分别是()A.100,0.08B.20,0.4C.10,0.2D.10,0.8-数学

题目简介

已知X~B(n,p),EX=8,DX=1.6,则n与p的值分别是()A.100,0.08B.20,0.4C.10,0.2D.10,0.8-数学

题目详情

已知X~B(n,p),EX=8,DX=1.6,则n与p的值分别是(  )
A.100,0.08B.20,0.4C.10,0.2D.10,0.8
题型:单选题难度:中档来源:不详

答案

D

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