According to an article in Time magazine, women are staying single longer these days, by choice. In 1963, 83% of women in the United States between the ages of 25 and 54 years were married, compared to 67% in 200 7. For 2007,
a. Identify the population.
b. Identify the specified attribute.
c. Under what circumstances is the proportion 0.67 a population proportion? a sample proportion? Explain your answers.