Question: The 2015–16 Xavier Musketeers women's basketball team represented Xavier University during the 2015–16 NCAA Division I women's basketball season, they were third year members of the newly reorganized Big East Conference, a collegiate athletic conference that competes in NCAA Division I in all sports except football, and has been officially recognized as a Division I multi-sport conference, effective on which date?
Sentence (from "2011–12 Xavier Musketeers men's basketball team"): Xavier finished the season 28–3,10–6 in A-10 play to finish in tie for third place in conference.
Relevant evidence: No