1 Your class rank in 2018 was 34 out of 250 students. In 2019 your class rank was 50 out of 310 students. In which year did you have the higher percentile ranking? 2 An engineering company has 4 openings, and the applicant pool consists of 10 database administrators and 9 network engineers. All are equally qualified so the hiring will be done randomly. What is the probability that the random selection will result in all database administrators