My son attended SRA in 2019, and my daughter was admitted last week. RMP is extremely competitive and I would expect out-of-state acceptance rates to be less than 3-4% and Cal-State to be a bit higher at about 10-15% (overall around 8-10%). SRA is probably around 20-25% but they have increased the number of tracks this year so I am expecting they are also increasing the number of places on offer.
No supplementary questions for SRA or RMP this year (after applying). The RMP interview is with the program director and she asks about 15 questions and gives about 20 mins of interview time.