3. The frequency distribution shown here illustrates the number of medical tests conducted on 30 randomly selected emergency patients. Number of tests performed Number of patients 0 1 2 3 4 or more 12 8 2 3 5 If a patient is selected at random, find these probabilities. a. The patient has had exactly 2 tests done. b. The patient has had at least 2 tests done. c. The patient has had at most 3 tests done. d. The patient has had 3 or fewer tests done. e. The patient has had 1 or 2 tests done.
