The hybrid Phillips Curve assumes inflation is determined as follows: π=πę-b×(ut-u)+Et, where mę=(1-)T-1 +Et[t+]. The parameterb corresponds to the slope of the Phillips Curve,(1-Y)governs how inertial inflation is,and e captures cost-push shocks.If unemployment lowers inflation all else equal and inflation expectations are largely backward looking,what should be true about the parameters of the hybrid Phillips Curve? O There is insufficient information to place restrictions on the parameters. 6>0 andy<0.5 O6<0 and y<0.5 ○b>0andy>0.5 ○b<0andy>0.5
Question
The hybrid Phillips Curve assumes inflation is determined as follows: π=πę-b×(ut-u)+Et, where mę=(1-)T-1 +Et[t+]. The parameterb corresponds to the slope of the Phillips Curve,(1-Y)governs how inertial inflation is,and e captures cost-push shocks.If unemployment lowers inflation all else equal and inflation expectations are largely backward looking,what should be true about the parameters of the hybrid Phillips Curve? O There is insufficient information to place restrictions on the parameters. 6>0 andy<0.5 O6<0 and y<0.5 ○b>0andy>0.5 ○b<0andy>0.5
Solution 1
The correct answer should be b<0 and y>0.5.
Here's why:
The parameter b in the Phillips Curve equation is associated with the relationship between unemployment and inflation. If unemployment lowers inflation all else equal, then b should be less than 0 (b<0), indicating a negative relationship between unemployment and inflation.
The parameter y in the equation governs how inertial inflation is. If inflation expectations are largely backward looking, this suggests that past inflation has a strong influence on current inflation. Therefore, y should be greater than 0.5 (y>0.5), indicating a high degree of inertia in inflation.
Solution 2
The correct answer should be b<0 and y>0.5.
Here's why:
The parameter b in the Phillips Curve equation is associated with the impact of unemployment on inflation. If unemployment lowers inflation all else equal, then b should be less than 0 (b<0). This is because a decrease in unemployment (ut-u) would lead to a decrease in inflation (π), indicating a negative relationship.
The parameter y in the equation is related to how inertial inflation is, or how much past inflation influences current inflation. If inflation expectations are largely backward looking, this suggests that past inflation has a significant impact on current inflation. Therefore, y should be greater than 0.5 (y>0.5), indicating a strong influence of past inflation on current inflation.
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