SOAL A

1. Identifikasi Persamaan

Model hipotetis:

Pt = a0 + a1MSt + a2Yt + e1t ...................…………..(1)

Mt = b0 + b1Yt + b2Pt + e2t …….……...………….(2)

It = c0 + c1Yt + e3t …….…………………(3)

PCt = d0 + d1Yt + e4t ……………………….(4)

Yt = PCt + It + Gt + Xt – Mt ……………………….(5)

Keterangan:

K (predetermined dalam model) : ada 7 (a0, b0, c0, d0, MSt, Gt, Xt)

M (endogenous variable dalam model ) : ada 5 (Pt, Mt, It, PCt, Yt)

Persamaan 1 : K-k > m-1 overidentified

7 – 2 > 2 – 1

Persamaan 2 : K-k > m-1 overidentified

7 – 1 > 3 – 1

Persamaan 3 : K-k > m-1 overidentified

7 – 1 > 2 – 1

Persamaan 4 : K-k > m-1 overidentified

7 – 1 > 2 – 1

Persamaan 5 : K-k > m-1 overidentified

7 – 2 > 4 – 1

2. Reduce Form

Pt : d0 + d1 MSt + Gt + Xt + vit

Mt : d2 + d3 MSt + Gt + Xt + v2t

It : d4 + d5 MSt + Gt + Xt + v3t

PCt : d6 + d7 MSt + Gt + Xt + v4t

Yt : MSt + Gt + Xt