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In a survey of 364 children aged 19 – 36 months, it was found that 91 liked to eat potato chips. If a child is selected at random, the probability that he/she does not like to eat potato chips is - Mathematics

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Question

In a survey of 364 children aged 19 – 36 months, it was found that 91 liked to eat potato chips. If a child is selected at random, the probability that he/she does not like to eat potato chips is ______.

Options

  • 0.25

  • 0.50

  • 0.75

  • 0.80

MCQ
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Solution

In a survey of 364 children aged 19 – 36 months, it was found that 91 liked to eat potato chips. If a child is selected at random, the probability that he/she does not like to eat potato chips is 0.75.

Explanation:

Total number of survey children’s age from 19 – 36 months, n(S) = 364.

In those of them 91 out of them liked to eat potato chips.

∴ Number of children who do not like to eat potato chips, n(E) = 364 – 91 = 273

∴ Probability that he/she does not like to eat potato chips = `(n(E))/(n(S)) = 273/364` = 0.75

Hence, the probability that he/she does not like to eat potato chips is 0.75.

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Chapter 14: Statistics & Probability - Exercise 14.1 [Page 135]

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NCERT Exemplar Mathematics [English] Class 9
Chapter 14 Statistics & Probability
Exercise 14.1 | Q 26. | Page 135
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