(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

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(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
$0.775$

Explore More

Browse All

Question Bank

All Subjects

Class 9 Questions

Class 9

Mathematics Questions

Chapter

Probability

Subtopic

Mix Examples - Probability

Two dice are thrown simultaneously $500$ times. Each time the sum of two numbers appearing on their tops is noted and recorded as given in the following table:

Sum Frequency

$2$ $14$

$3$ $30$

$4$ $42$

$5$ $55$

$6$ $72$

$7$ $75$

$8$ $70$

$9$ $53$

$10$ $46$

$11$ $28$

$12$ $15$

If the dice are thrown once more,what is the probability of getting a sum between $8$ and $12\,?$

Medium

View Solution

When a balanced die is thrown,find the probability of receiving a composite number.

Easy

View Solution

$A$ die is thrown $400$ times with the frequencies for the outcomes $1, 2, 3, 4, 5$ and $6$ as given in the following table:

Outcome $1$ $2$ $3$ $4$ $5$ $6$

Frequency $68$ $70$ $74$ $54$ $70$ $64$

Find the probability of getting each outcome.

Medium

View Solution

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

Easy

View Solution

The probability that a non-leap year should have $53$ Sundays is ............ (in $/7$)

Easy

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

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

Sum	Frequency
$2$	$14$
$3$	$30$
$4$	$42$
$5$	$55$
$6$	$72$
$7$	$75$
$8$	$70$
$9$	$53$
$10$	$46$
$11$	$28$
$12$	$15$

$A$ 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

When a balanced die is thrown,find the probability of receiving a composite number.

$A$ die is thrown $400$ times with the frequencies for the outcomes $1, 2, 3, 4, 5$ and $6$ as given in the following table: Outcome $1$ $2$ $3$ $4$ $5$ $6$ Frequency $68$ $70$ $74$ $54$ $70$ $64$ Find the probability of getting each outcome.

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

The probability that a non-leap year should have $53$ Sundays is ............ (in $/7$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$A$ 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.

$A$ die is thrown $400$ times with the frequencies for the outcomes $1, 2, 3, 4, 5$ and $6$ as given in the following table:

Outcome $1$ $2$ $3$ $4$ $5$ $6$

Frequency $68$ $70$ $74$ $54$ $70$ $64$

Find the probability of getting each outcome.