55 So,the limiting distribution of vn((Xn)-un)is also degenerate, but with point mass at -7.This is a different limiting distribution than that of vn((Xn)-uo).Therefore,(Xn)is not regular.55 So, the limiting distribution of √n(ˆµ(Xn) − µn) is also degenerate, but with point mass at −τ. This is a different limiting distribution than that of √n(ˆµ(Xn) − µ0). Therefore, ˆµ(Xn) is not regular