The bottom 80 percent of families in Alpha receive approximately what percentage of total income?

5 percent

Explanation:

I inferred you're referring to a question (The bottom 20 percent of families in Alpha receive approximately what percentage of total income?) related to cummulative income. According to information found on the graph provided, note that the y-axis represents the total income and the x-axis represents the population.

Thus, we could infer from the data that 20 percent of families in Alpha receive 5 percent of their total income.

answer; i believe the correct answer is (4.0);