confin.mean.iv=function(vec,y){
confin.mean(vec,y)[1]-confin.mean(vec,y)[2]
}
confin.var.iv=function(vec,y){
confin.var(vec,y)[1]-confin.var(vec,y)[2]
}
confin.iv=function(vec,y,kind){
confin(vec,y,kind)[1]-confin(vec,y,kind)[2]
}
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