I had gone to pick up my little brother at his friends house and I went across the street to say hi to my cousin. She was having a party and there were minors there. The police had been called and they arrived right after I got there. I was charged with contributing to minors, conspiracy, and resisting arrest which I am innocent. When I went to court I was given a Waiver of Preliminary Hearing or presentation of Grand Jury. Does this mean I took the plea they offered me or am I going to Jury trial?