RDP 9706: Is the Phillips Curve A Curve? Some Evidence and Implications for Australia Equation (5)

y t = X t β t + ε t ε t N ( 0 , σ 2 H ) MathType@MTEF@5@5@+=feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaqbaeqabeGaaaqaaiaadMhadaWgaaWcbaGaamiDaaqabaGccqGH9aqpcaWGybWaa0baaSqaaiaadshaaeaaiiaacqWFYaIOaaGccqaHYoGydaWgaaWcbaGaamiDaaqabaGccqGHRaWkcqaH1oqzdaWgaaWcbaGaamiDaaqabaaakeaacqaH1oqzdaWgaaWcbaGaamiDaaqabaGccqWI8iIocaWGobWaaeWaaeaacaaIWaGaaiilaiabeo8aZnaaCaaaleqabaGaaGOmaaaakiaadIeaaiaawIcacaGLPaaaaaaaaa@4E94@