{Luestion A2 (a) The following table shows the times (in minutes) it takes of a sample of 20' students to complete an English assignment, arranged in ascending order. l4? 52 62 21 so 89 95 1119 111 112 |12o 122 124 131 135 142 151 152 158 122 Suppose a 6-class grouped frequency distribution is to be constructed for the above data set using the smallest value as the lower class limit of the rst class. (i) Find the class width. (2 marks) (ii) Find the lower class limit of the 2'1d class. (2 marks) (iii) Find the upper class boundary of the 3rd class. (2 marks) (iv) Find the percentile rank of the student who used 71 minutes to complete the English assignment. (2 marks) (b) The grouped frequency distribution below shows the ages (in years) of a sample of 50 bus drivers. Use the information given in the grouped frequency...r distribution below to construct a histogram. (6 marks) 3539 5 41144 15 15 5 11 55 59