a group of college djs surveyed students to find out what music to plan for their upcoming parties. thirty percent of the students preferred dubstep, 25% of the students liked trance music, and 20% wanted to hear only house music. fifteen percent of the respondents selected both dubstep and trance. the conditional probability that a student likes dubstep given that he or she likes trance music is: group of answer choices 55%. 60%. 65%. 70%.