1. probably within in top 10
2. of course, merit-based
3. doing ma in a certain school doesn't ever guarantee the same phd program.admission. in fact, and in many cases, it's a cash cow program.
a friend of mine, who applied to PhD courses, got an unofficial acceptance email from the department. it was 'round 20th of last month.
and I applied to the same program, but I haven't got any news.. probably I'm out
Columbia Ealac will send an email or make a phone call to those accepted applicants around 15th of this month,
and for those who haven't got any email or phone call, the reject mail will come about a month later.