問題詳情
20. Two sets of samples { X1 , X2 ,..... X m } and {Y1 , Y2 ,.....Yn } ( m > n ) were drew independently froma population N (μ , σ2 ) , we have two estimator
(A)
(B)
(C)
(D)
20. Two sets of samples { X1 , X2 ,..... X m } and {Y1 , Y2 ,.....Yn } ( m > n ) were drew independently froma population N (μ , σ2 ) , we have two estimator