According to current population surey data for 1985,50% of women age 16 and over in the US were employed. By 2005 the percentage had increased to 59%. is the difference in percentage statistically significant??
A) Does the question make sense?
B) Can you answer it based on the info given?
C) Can you answer it if you assume the current population survey was based on indepent simple random samples in each year of 50,000 women age 16 and over?