No. 13 Let X1, X2, ..., Xn, ... be R-valued IID random variables, and O C R. Moreover, let 60 EO be the unique solution to the following equation: I(60) := Ev(00, X1)] = 0, with a bounded function v on O x R. (1) Give an example of the estimating function to give a Z-estimator On of do. (2) Give sufficient conditions so that the estimator you gave in (1) has the consistency