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.
Find the probability that a student chosen at random
(i) likes statistics,
(ii) does not like it
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.
Find the probability that a student chosen at random
(i) likes statistics,
(ii) does not like it
Solution:
Total number of students = 135 + 65 = 200
(i) Number of students liking statistics = 135
$\mathrm{P}($ students liking statistics $)=\frac{135}{200}=\frac{27}{40}$
(ii) Number of students who do not like statistics = 65
$\mathrm{P}($ students not liking statistics $)=\frac{65}{200}=\frac{13}{40}$
Total number of students = 135 + 65 = 200
(i) Number of students liking statistics = 135
$\mathrm{P}($ students liking statistics $)=\frac{135}{200}=\frac{27}{40}$
(ii) Number of students who do not like statistics = 65
$\mathrm{P}($ students not liking statistics $)=\frac{65}{200}=\frac{13}{40}$
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