(D) 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 under $40$ years

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(D) 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 under $40$ years of age.The workers under $40$ years are those in the age groups $20-29$ and $30-39$.Number of workers under $40$ years $= 38 + 27 = 65$.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{65}{200} = \frac{32.5}{100} = 0.325$.

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 under $40$ years.

A
$0.925$
B
$0.125$
C
$0.525$
D
$0.325$

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Probability

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Mix Examples - Probability

Two coins are tossed $1000$ times and the outcomes are recorded as below:

Number of heads $2$ $1$ $0$

Frequency $200$ $550$ $250$

Based on this information,the probability for at most one head is

Medium

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The probability of a month of August having $5$ Wednesdays is ............

Easy

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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.

Medium

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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:

Medium

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The probability of occurrence of event $A$ is $0.43$. The probability of event $A$ not occurring is .........

Easy

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

$A$ 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 under $40$ years.

Similar Questions

Two coins are tossed $1000$ times and the outcomes are recorded as below: Number of heads $2$ $1$ $0$ Frequency $200$ $550$ $250$ Based on this information,the probability for at most one head is

The probability of a month of August having $5$ Wednesdays is ............

$A$ 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.

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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 under $40$ years.

Two coins are tossed $1000$ times and the outcomes are recorded as below:

Number of heads $2$ $1$ $0$

Frequency $200$ $550$ $250$

Based on this information,the probability for at most one head is

$A$ 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.