The frequency distribution shown here illustrates the number of medical tests conducted on 30 randomly selected emergency patients. Number of Tests Number of Performed Patients O 12 8 2 N 3 3 4 or more 5 If a patient is selected at random, find these probabilities. a) [2 pts] The patient has exactly 2 tests done. b) [2 pts] The patient has had at least 2 tests done. c) [2 pts] The patient has had at most 3 tests done. d) [2 pts] The patient has had 3 or fewer tests done. e) [2 pts] The patient has had 1 or 2 tests done