RDP 2015-12: Modelling the Australian Dollar Equation (4)

{\hat{z}}_{t} = R T W I_{t} - (\begin{array}{l} \hat{θ} + {\hat{β}}_{1} T o T_{t} + {\hat{β}}_{2} R I R D_{t} + {\hat{δ}}_{1} \bar{Δ T o T_{t}} + {\hat{δ}}_{2} \bar{Δ T o T_{t - 1}} \\ + {\hat{δ}}_{3} \bar{Δ T o T_{t + 1}} + {\hat{δ}}_{4} \bar{Δ R I R D_{t}} + {\hat{δ}}_{5} \bar{Δ R I R D_{t - 1}} + {\hat{δ}}_{6} \bar{Δ R I R D_{t + 1}} \end{array})