According to the U. S. Census Bureau, the data below shows the percentage of people aged 15 to 24 who made under $10,000 per year and who made $2500, $5000, and $7500 per year. You randomly select a person between the ages of 15-24 from the U. S. population. Let X be income per year of a randomly chosen person. Below is the probability distribution of X. x n 2500 5000 7500
p n 0.504 0.254 0.242
If you randomly selected 10 people from this age group, the expected combined income is
dollars