Final answer:
A substantial tariff on manufactured goods decreases real income for manufacturing workers and increases real income for non-manufacturing workers.
Step-by-step explanation:
The effect of a substantial tariff levied on manufactured goods on the real income distribution within the economy would be a decrease in real income for manufacturing workers and a increase in real income for non-manufacturing workers.
When a high tariff is placed on manufactured goods, it makes imported goods more expensive, causing a decrease in the demand for those goods. As a result, the demand for workers in the manufacturing industry decreases, leading to lower wages. On the other hand, non-manufacturing workers may benefit as the tariff can create a higher demand for domestically produced goods, increasing their wages.
Overall, the tariff has an impact on the income distribution by favoring non-manufacturing workers over manufacturing workers.