A CMOS inverter, designed to have a mid-point voltage V_i equal to half of V_dd, as shown in the figure, has the following parameters: V_dd=3 V, μ_nC_ox=100μA/V²; V_tn=0.7 V for nMOS, μ_pC_ox=40μA/V²; |V_tp|=0.9 V for pMOS. The ratio of (W/L)_n to (W/L)_p is equal to... (rounded off to 3 decimal places).