The following table shows the female physicians in the United States cross classified by age and specialty.

	Under 35	35-45	45 or over	Total
Family Practice	5842	6797	2828	15467
Internal Medicine	11799	12838	5864	30501
Obstetrics/Gynec.	4454	4857	2202	11513
Plastic Surgery	85	262	131	478
Total	22180	24754	11025	57959

Suppose a female physician is chosen randomly.

Are age and specialty independent? There is no enough information to answer NO YES

Are age and specialty disjoint? YES There is no enough information to answer NO