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...t;-rep(1,length(y)) n1<-length(y) # number of childbirths in mother (0 for 1-2,1 for 3+) z1<-c(0,0,1,1,1,1,1,rep(0,29),rep(0,36),rep(0,41),rep(1,85),rep(1,105),rep(1 ,84), 1,rep(0,22),rep(0,33),rep(0,38),rep(1,50),rep(1,103),rep(1,135)) # of child births in mother three catag 2 dummy variables z2=1(1-2) else 0,z3=1(o birth)else0so if z2 # z3 both r zero its 3 births catageroy z2<-c(0,1,0,0,0,1,0,rep(0,29),rep(1,36),rep(0,41),rep(0,85),rep(1,105),rep(0 ,84), 0,rep(0,22),rep(1,33),rep(0,38),rep(0,50),rep(1,103),rep(0,135)) z3<-c(1,0,1,1,1,0,0,r...