Final answer:
The question is asking about the calculation of income in relation to a percentage of quintiles, and comparing the top and bottom quintiles to the U.S. income distribution.
Step-by-step explanation:
The question is asking about the calculation of income in relation to a percentage of quintiles. In the provided example, a group of 10 people have different annual incomes. To calculate the share of total income each quintile receives from this income distribution, you need to arrange the incomes in ascending order and divide them into five equal parts. The top and bottom quintiles represent the highest and lowest 20% of incomes, respectively. To determine if the top and bottom quintiles of this distribution have a greater or larger share of total income than the U.S. income distribution, you would need data from the U.S. income distribution in 2005.