Question 1
(15 marks)
a school has three form 6 classes, a, b and c, and three elective courses, economic,
arts and chemistry. it collects the following data on the number of student at each class
in each elective course:
elective course
arts
chemistry
economic
23
class a
class b
14
class c
34
a)
if we pick a student at random, what is the probability that the student is in class
(4 marks)
c?
b)
if we pick a student at random, what is the probability that the student is in class a
and at economic course?
(5 marks)
c)
if we pick a student at random from class b, what is the probability that the student
is at chemistry course?
(6 marks)