From the U.S. Census Bureau document America's Families and Living Arrangements and an article in Time magazine,

Question:

From the U.S. Census Bureau document America's Families and Living Arrangements and an article in Time magazine, we found that, in 1963, 83.0% of American women between the ages of 25 and 54 were married, compared to 64.6% in 2010.
a. For 2010, identify the population.
b. For 2010, identify the specified attribute.
c. Under what circumstances is the proportion 0.646 a population proportion?
d. Under what circumstances is the proportion 0.646 a sample proportion?