填空题设随机变量X的概率分布为 dfrac {3)(10) dfrac (3)(10) dfrac (1)(10) dfrac (1)(10), dfrac (1)(10), dfrac (1)(10)} ,随机变量Y是X的函数，其定义为将X的四个最小的概率分布合并为一个 dfrac {3)(10) dfrac (3)(10) dfrac (1)(10) dfrac (1)(10), dfrac (1)(10), dfrac (1)(10)} ,。H(X)=______ bit/sym，H(Y)= ______ bit/sym。(保留两位小数)

【题文】设离散型随机变量X的分布列为: X -1 0 1 2 3 P dfrac (1)(10) dfrac

设随机变量X的分布律为X -1 0 1-|||-P dfrac (1)(5) dfrac (3)(5) dfrac (1)(5)设X -1 0 1-|||-P

(13)设随机变量(X,Y)的联合概率分布如下.-|||-X-|||-①-|||-0 dfrac (1)(8) a dfrac (1)(4)-|||-1 dfr

已知 (A)=dfrac (1)(2) ,(B)=dfrac (1)(3) ,-|||-(C)=dfrac (1)(5) ,(AB)=dfrac (1)(10)

已知 (A)=dfrac (1)(2) , (B)=dfrac (1)(3) , (C)=dfrac (1)(5)-|||-, (AB)=dfrac (1)(1

已知 (A)=dfrac (1)(2) ,(B)=dfrac (1)(3) ,-|||-(C)=dfrac (1)(5) ,(AB)=dfrac (1)(10)

设0,1,0,1,1来自分布总体B(3,p)的样本观察值,则p的矩估计值为().A.dfrac (1)(10)A.dfrac (1)(10)A.dfrac (1

设随机变量X的分布函数为(X)=dfrac (1)(2)Phi (x)+dfrac (1)(2)Phi (dfrac (x-4)(2))(X)=dfrac (1

10、单选-|||-极限 lim _-|||-A-|||-dfrac (1)(6)-|||-B dfrac (1)(2)-|||-C -dfrac (1)(3)

已知离散型随机变量X的分布律如下.-|||-x -2 -1 0 1 3-|||-p dfrac (1)(5) dfrac (1)(6) dfrac (1)(5)