Sir i am stuck for this question

Question 5 Not yet answered Marked out of 1.00 Flag question 100 students are interviewed about their favourite course taken at HKU. Course STAT6103 STAT0163 STAT0603 STAT1063 STAT0063 STAT1603 Frequency 0 0 0 2 13 85 Which of the following CANNOT be found? . (1) coefficient of variation; . (2) mode; . (3) median. Select one: O a. (1) and (3) only O b. (2) and (3) only O c. (1) and (2) only O d. None of the others O e. (1), (2) and (3) Of. (1) onlyQuestion 7 Not yet answered Marked out of 1.00 Flag question Suppose we want to test Ho : # 2 30 versus HA :