First of all, unlike many of you tend to believe, duke does not interview 750 applicants. The number is well over 1200 ( Jeanie confirmed this a few days a go).
Duke Interviews so many students and is willing to accept interviews virtually and regionally because they absolutely do not care about interviews. They just need to say they interviewed you. If you are slightly more than a competent public speaker, you pass the interview test. (A duke med student during my interview told me that he actually fell asleep during the faculty interview and still got in)
This is far and away, THE most stat ***** school in the country. They try to mislead you by interviewing the 3.7/33 candidates but rest assured, those students don't have a snowball's chance in h*** of getting in. Those students are interviewed only so that on the rare occasion that they had crazy extenuating circumstances, they are given a chance.
This school is trying to get the students with the best stats in the nation and they figure by "interviewing" 1200 students and wait listing 350 or so...they can eventually pick and choose their 3.8-4.0s with the 37+.
To those who got accepted, congrats, because you definitely earned it. To those who got waitlisted, realize if you have the stats, you could/will get in. To those rejected, only be mad at yourself if you felt like you actually had a chance.
Please feel free to refute my theory.