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 :
Answer : D
We will use the formula of probability:-
Total possible outcomes =642
Favourable outcomes =514
Required probability
So if a person is selected at random, the probability that the person has a high school certificate is 0.8
Therefore option (D) is correct.