Question:
In a sample study of 642 people, it was found that 514 people have a high school certificate. If a person is selected at random, the probability that the person has a high school certificate, is
(a) 0.5
(b) 0.6
(c) 0.7
(d) 0.8
Solution:
(d) The total number of people in sample study, n(S) = 642.
The number of people who have high school certificate, n(E) = 514.
So, the probability that the person selected has a high school certificate
= n(E)/n(S)=514/642 = 0.8
Hence, the probability that the person has a high school certificate is 0.8.
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