Answer:
When the Fed raises the federal funds rate, the inflation rate decreases about two years later.
Step-by-step explanation:
When trying to stimulate the economy either by increasing or decreasing, policymakers have to take into consideration how it would effect interest rate, amount of money available in the economy, loans that would be acquired by banks and the behavior of interest rate.
Interest rate can be impacted quickly even though the period of time it would take for such action to have a reflection on what quantity of money is available in the economy. Then also a period of 2 years would be taken for this action to take effect on inflation.
Therefore
When the Fed raises the federal funds rate, the inflation rate decreases about two years later.