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 :

0.5

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0.6

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0.7

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0.8

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Solution

The correct option is B $0.8$
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
$∴ P (E) = \frac{n (E)}{n (S)} = \frac{514}{642} = 0.8006$
Hence, D is the correct option.

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Similar questions

Q. Question 25
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

Q. In a sample survey of 645 people, it was found that 516 people have a high school certificate. If a person is chosen at random, what is the probability that he / she has a high school certificate?
(a)

\frac{1}{2}

(b)

\frac{3}{5}

(c)

\frac{7}{10}

(d)

\frac{4}{5}

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In a sample survey of 645 people, it was found that 516 people have a high school certificate. If a person is chosen at random, what is the probability that he/she has a high school certificate?

(a) $\frac{1}{2}$

(b) $\frac{3}{5}$

(d) $\frac{4}{5}$

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150

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If a person from this study is selected at random, what is the probability that this person has either Type A or Type AB blood?

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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 :

The correct option is B 0.8Given that:Total number of people n(S)=642No. of peoples having high school certificate n(E)=514P(E)=Probability that the person has a school certificate∴P(E)=n(E)n(S)=514642=0.8006Hence, D is the correct option.

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 :

The correct option is B $0.8$
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
$∴ P (E) = \frac{n (E)}{n (S)} = \frac{514}{642} = 0.8006$
Hence, D is the correct option.