Question

According to a u.s. national survey conducted in 2009, by age 20, _____ percent of u.s. youth have engaged in sexual intercourse.

Answer 1

In the survey made by United States in the year 2009, by age 20, the percentage of youth in US that are engaged in sexual intercourse is 77%. The percentages in the national level are as follows, for the twelfth -graders are 49%, 40% of eleventh- graders, 29% of tenth-graders and for the 9th graders, 21% are sexually active. These are all according to Eaton and others, 2010.