In a sample study of 640 people, it was found that 512 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
class 9th question
Answers
Answer:
Given that:
Total number of people n(S)=642
No. of peoples having high school certificate n(E)=514
P(E)=Probability that the person has a school certificate
∴P(E)=
n(S)
n(E)
=
642
514
=0.8006
Hence, D is the correct option.
Step-by-step explanation:
P L E A S E __M A R K __M E __A S __B R A I N LI E ST. I CAN SOLUTIONS FOR ALL SUBJECT INCLUDING HINDI
Given:
People in sample study = 640
People having high school certificate = 512
To Find:
If a person is selected at random, the probability that the person has a high school certificate
Solution:
Total number of people n(S ) = 640
Total number of people having high school certificate n(E) = 512
P (E) = Probability that a person has a school certificate
Thus,
P (E) = n(E)/ n(S )
= 512/640
= 0.8
Answer: The probability that the person has a high school certificate is (d) 0.8