RDP 9809: Estimating Output Gaps Equation (13)

z t = ϕ 1 z t1 + ϕ 2 z t2 + ε t z MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamOEamaaBa aaleaacaWG0baabeaakiabg2da9iabew9aMnaaBaaaleaacaaIXaaa beaakiaadQhadaWgaaWcbaGaamiDaiabgkHiTiaaigdaaeqaaOGaey 4kaSIaeqy1dy2aaSbaaSqaaiaaikdaaeqaaOGaamOEamaaBaaaleaa caWG0bGaeyOeI0IaaGOmaaqabaGccqGHRaWkcqaH1oqzdaqhaaWcba GaamiDaaqaaiaadQhaaaaaaa@4BDA@