(a)
*insert image*

(b) modal mark is 8

(c) mean mark = ΣFx/ΣF = 131/20 = 6.55

(d)
Pupils that scored more than 6 marks;
mark 8 = 7; mark 9 = 1; mark 10 = 2
Total = 7+1+2 = 30

(e)
Students with 2 marks are 3
Probability = student with 2 marks/total number of students = 3/20