三、解答与证明题-|||-1.设总体X具有分布律:-|||-X 1 2 3-|||-p θ θ .https:/img.zuoyebang.cc/zyb_dfbb82076b718c29050d093748335c05.jpg-20-|||-其中 theta gt 0 且未知,今有样本(1,1,1,3,2,1,3,2,2,1,2,2,3,1,1,2 ),求θ的-|||-矩估计值以及最大似然估计值.

2.设总体X的分布律为-|||-X 0 1 2 3-|||-p θ^2 (1-theta ) θ^2 https:/img.zuoyebang.cc/zyb_a

(13)(2010年,一)设总体X的分布为:-|||-X 1 2 3-|||-p https:/img.zuoyebang.cc/zyb_2a76612f050

6.总体X的概率分布为-|||-x 0 1 2 3-|||-P θ^2 (1-0) θ^2 https:/img.zuoyebang.cc/zyb_d23f4d

设矩阵A= (3,-2) ,B= 2 4 https:/img.zuoyebang.cc/zyb_7142fe6d884b795b75323081826723e

1.设函数 (x)=dfrac (1)(x) ,g(x)=1-x 则 [ g(x)] = ()-|||-① https:/img.zuoyebang.cc/zy

设总体X的概率分布为X 0 1 2-|||-P (theta )^2 https:/img.zuoyebang.cc/zyb_9a4dc435e7d9078a6

1.设函数 (x)=dfrac (1)(x), g(x)=1-x 则 [ g(x)] = ()-|||-① https:/img.zuoyebang.cc/zy

X 1 2 3-|||-p .-1 .https:/img.zuoyebang.cc/zyb_9e778ee622bfcbd85bc2aaa7e97331dd.

2.设总体X的分布函数为-|||-(x,alpha ,beta )= https:/img.zuoyebang.cc/zyb_1c419f18b15ff8695

(2)已知 (A)=1/2, (B)=1/3, (C)=1/5, (AB)=1/10, (AC)=1/15, P(BC)=-|||-https:/img.zuo