(C) Total number of workers in the factory $= 38 + 27 + 86 + 46 + 3 = 200$.Let $E$ be the event that the person selected at random is $40$ years or mo

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(C) Total number of workers in the factory $= 38 + 27 + 86 + 46 + 3 = 200$.Let $E$ be the event that the person selected at random is $40$ years or more.The number of workers who are $40$ years or more is the sum of workers in the age groups $40-49$,$50-59$,and $60$ and above.Number of favorable outcomes $= 86 + 46 + 3 = 135$.The probability $P(E)$ is given by the formula:$P(E) = \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$$P(E) = \frac{135}{200} = 0.675$.

Class 9 Mathematics Probability Mix Examples - Probability

Medium

$A$ recent survey found that the ages of workers in a factory is distributed as follows:

Age (in years) $20-29$ $30-39$ $40-49$ $50-59$ $60$ and above

Number of workers $38$ $27$ $86$ $46$ $3$

If a person is selected at random,find the probability that the person is $40$ years or more.

A
$0.75$
B
$0.375$
C
$0.675$
D
$0.775$

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Class 9

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Probability

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Mix Examples - Probability

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Medium

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Easy

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Easy

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Medium

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Age (in years)	$20-29$	$30-39$	$40-49$	$50-59$	$60$ and above
Number of workers	$38$	$27$	$86$	$46$	$3$

Number of girls in a family	$0$	$1$	$2$
Number of families	$128$	$672$	$200$

$A$ recent survey found that the ages of workers in a factory is distributed as follows: Age (in years) $20-29$ $30-39$ $40-49$ $50-59$ $60$ and above Number of workers $38$ $27$ $86$ $46$ $3$ If a person is selected at random,find the probability that the person is $40$ years or more.

Similar Questions

$1000$ families with $2$ children were selected randomly,and the following data were recorded: Number of girls in a family $0$ $1$ $2$ Number of families $128$ $672$ $200$ Compute the probability of a family,chosen at random,having $(1)$ two girls,$(2)$ one girl.

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:

$A$ number is chosen at random from the single-digit natural numbers. The probability that the number chosen is a multiple of $3$ is ...........

$A$ coin is tossed $50$ times,in which $23$ times head comes up and $27$ times tail comes up. Calculate the probability for each event.

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:

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$A$ recent survey found that the ages of workers in a factory is distributed as follows:

Age (in years) $20-29$ $30-39$ $40-49$ $50-59$ $60$ and above

Number of workers $38$ $27$ $86$ $46$ $3$

If a person is selected at random,find the probability that the person is $40$ years or more.

$1000$ families with $2$ children were selected randomly,and the following data were recorded:

Number of girls in a family $0$ $1$ $2$

Number of families $128$ $672$ $200$

Compute the probability of a family,chosen at random,having $(1)$ two girls,$(2)$ one girl.