Question 1

Paper 2Easy5 marks

A school surveys 50 students about how they travelled to school on a particular day. Of these students, 23 travelled by bus, 19 travelled by train, and 8 used both the bus and the train.

One student is selected at random from the 50 students.

(a)

Find the probability that the student travelled by bus or train.

[2]
(b)

Find the probability that the student travelled by neither bus nor train.

[1]
(c)

Given that the student travelled by bus, find the probability that the student also travelled by train.

[2]

More AI 4.3 Probability and distributions questions