Each respondent in the Current Population Survey of March 2005 can be classified by education and occupation. The table below shows the observed frequencies for civilian women age 25-29 in Virginia.

i) Women with different educational levels seem to have different occupations. Or is this just chance variation?

ii) If the difference is real, what accounts for it? Educational level - High School or less professional 12 other white collar 15 blue collar 5 not in labor force 31 Educational level - More than High School professional- 34 other white collar- 17 blue collar-2 not in labor force- 14

a) can you answer these questions with the information given? if so answer them, if not, why not?

b) Can you answer these questions if the data in the table resulted from a simple random sample of women age 25-29 in Virginia?

If so, answer them. If not, why not?