You wont find a majority of hot women getting advanced degrees or technical degrees for that matter, because they dont have to.
I'd love to see the statistical evidence of this. Ah well, let me say this- any woman, attractive or not, better learn to take care of herself the best way she can. Any woman, regardless of looks, should major in a field she is interested in that can also support her. Pretty girls get dumped by their husbands too. They also have to live in an economy that often requires two income just to survive.
Unattractive women know at an early age, that their prospects for finding Prince Charming to take care of them are low, and they hit the books, studying harder than pretty girls do.
This statement is an insult to all the pretty girls who bust their butts to prepare for and advance in a career.
That doesnt make it any less true.