Question 1 (10 marks) Suppose the data consist of repeated observations (Yit, xT), t = 1,...
7. Suppose the data consist of repeated observations (y;it, X), t = 1, -.. ,T, for each in- dividual i = 1,... ,n. Here yit is the response and xt is a covariate vector. A linear mixed-effects model for analysing the population-averaged and subject-specific effects of Xit is of the following form Z;B + W;b; + €;, yi = where y (yi1;* . ,ViT)T; Z; is a T x p design matrix built from {xji} for the fixed effects B;...
Suppose the data consist of repeated observations (yt,X), t = 1,-.. ,T, for each in- dividual i 1,.. , n. Here yit is the response and xjt is a covariate vector. A linear mixed-effects model for analysing the population-averaged and subject-specific effects of Xit is of the following form ZiBWibi Ei, Уi (yil ,yiT)T; Zi is a T x p design matrix built from {xjt} for the fixed are i.i.d. MVN(0, Q) > 0 where y effects B; Wi is...