Which statement is true regarding age in the United States?
As the age-group increases, the percentage of people that fall into that age-group decreases.
The same percentage of people (5-7%) fall into each 5-year age range starting from the youngest children to middle
adulthood.
About 25% of the population is over 60 years old, with 10% over the age of 75.
There has been a decrease in the average age of Americans by 7 years since 1980.
