Use the four-step process to analyze the impact of a reduction in tariffs on imports of iPods on the equilibrium price and quantity of Sony Walkman-type products.

A reduction in tariffs on imports of iPods signifies that the price of iPods will decrease. This will have an effect on the market for Sony Walkman-type products, as they are substitutes for iPods. We will analyze the impact by considering changes to both demand and supply of Sony Walkman-type products.

The decrease in the price of iPods, due to reduced tariffs, makes iPods relatively more attractive to consumers compared to Sony Walkman-type products. This will result in a decrease in the demand for Sony Walkman-type products, as more consumers will opt for iPods instead. Graphically, this can be represented by a leftward shift of the demand curve for Sony Walkman-type products.

Reduced tariffs on iPods will not directly affect the supply of Sony Walkman-type products. However, it's important to consider that manufacturers of such products might decide to reduce their production or focus on other product lines due to the decreased demand for Sony Walkman-type products. This could result in a decrease in the supply of these products. Graphically, this potential change can be represented by a leftward shift of the supply curve for Sony Walkman-type products.

After considering the changes in demand and supply, we can determine the new equilibrium price and quantity for Sony Walkman-type products. If both the demand and supply curves shift to the left, this would indicate a lower equilibrium quantity and a decrease, increase or no change in the equilibrium price, depending on the magnitude of the shifts. In conclusion, a reduction in tariffs on imports of iPods will result in a decrease in the demand for Sony Walkman-type products. Depending on the response from the manufacturers, there might also be a decrease in supply. Ultimately, this would lead to a lower equilibrium quantity, while the equilibrium price would depend on the magnitude of the demand and supply shifts.