6. Refer to Table 14.7, Chapter 14. (i) Find the probability that a student obtained less than 20% in the mathematics test. (ii) Find the probability that a student obtained marks 60 or above.
(i) Number of students who obtained less than 20% in the mathematics test = 7 ∴, the probability that a student obtained less than 20% in the mathematics test = 7/90 (ii) Number of students who obtained marks 60 or above = 15+8 = 23 ∴, the probability that a student obtained marks 60 or above = 23/90
