Question

To know the opinion of the students about the subject statistics, a survey of 200 students was conducted. The data is recorded in the following table

Opinion	Number of students
Like Dislike	135 65

Find the probability that a student chosen at random
(i) likes statistics,
(ii) does not like it.

Answer 1

Total number of students whose opinion is obtained = 200
(i) ∵ Number of students who like statistics = 135
∴ Probability of selecting a student who likes statistics =$\frac{135}{200}=\frac{27}{40}$
(ii) ∵ Number of students who do not like statistics = 65
∴ Probability of selecting a student who does not like statistics =$\frac{65}{200}=\frac{13}{40}$