In the 1930s,the mean number of years of education in the United States was ______;in the 1990s,the mean was above ______ years.
A) 5;9
B) 9;11
C) 9;14
D) 11;14

Question

Quizplus · Accepted Answer

In the 1930s, the mean number of years of education in the United States was around 8-9 years, and by the 1990s, it had increased to above 14 years, reflecting significant improvements in educational attainment over the decades.

In the 1930s,the Mean Number of Years of Education in the United