10.设一元线性回归模型为 _(1)=(beta )_(0)+(beta )_(1)(x)_(1)+(c)_(1) (varepsilon )_(i)approx N(0,(sigma )^2) =1,2,... ,n, 则 ((y)_(1))=-|||-A.β0 B.β1x C. beta in (beta )_(1)(x)_(1) D. (beta )_(9)+(beta )_(1)(x)_(1)+(e)_(1)