设随机变量ξ的分布列P(ξ=i)=a2i,i=1,2则P(ξ=2)为()A.112B.16C.14D.13-数学

题目简介

设随机变量ξ的分布列P(ξ=i)=a2i,i=1,2则P(ξ=2)为()A.112B.16C.14D.13-数学

题目详情

设随机变量ξ的分布列P(ξ=i)=http://www.mofangge.com/html/qDetail/02/g0/201401/data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAtCAYAAABWHLCfAAAAb0lEQVRYhe2XOwqAMBAFcwzL3b3/vTyGVoIE0ULznoQZ2CLVJC//1gAAOqpqO0ouvmvLOmEfvVRuj/0cuSV6gNdk5jqqHuURsYwqQXYghONVjv1WQ24R2+d9Xn7xTr9qzyvvsW4txBaxfLXzMfyaHdCEZctn9NvoAAAAAElFTkSuQmCC,i=1,2则P(ξ=2)为(  )
A.B.C.https://img.360youke.com/images/upload/03/4647/6862201iwxweqrewgs.pngD.
题型:单选题难度:中档来源:不详

答案

D

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