The ages of 80 employees of a company are as follows- array - c - c - Wline Age - Frequency-llhline 0 -20 - 15 Whline 20-40 - 36 Whline40-60 - 13 Whline60- 16 illhlinelendarrayFind the probability that an employee chosen at random will be aged between 20 and 40 years-

Total number of employees = 80 Number of employees nbsp;aged between 20 and 40 years = 36 Hence, the probability that an employee chosen at random will be a ...

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Standard IX

Mathematics

Probability

The ages of 8...

Question

The ages of 80 employees of a company are as follows.

$\begin{matrix} A g e & F r e q u e n c y 0 - 20 & 15 20 - 40 & 36 40 - 60 & 13 60 + & 16 \end{matrix}$

Find the probability that an employee chosen at random will be aged between 20 and 40 years.

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Solution

Total number of employees = 80
Number of employees aged between 20 and 40 years = 36

Hence, the probability that an employee chosen at random will be aged between 20 and 40 years
$= \frac{36}{80} = 0.45.$

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The ages of 80 employees of a company are as follows.

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\begin{matrix} A g e (i n y e a r s) & N u m b e r o f e m p l o y e e s 20 - 25 & 20 25 - 30 & 15 30 - 35 & 12 35 - 40 & 10 40 - 45 & 8 45 - 50 & 7 \end{matrix}

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$\begin{matrix} A g e (i n y e a r s) & N u m b e r o f e m p l o y e e s 20 - 25 & 20 25 - 30 & 15 30 - 35 & 12 35 - 40 & 10 40 - 45 & 10 45 - 50 & 8 \end{matrix}$

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The ages of 80 employees of a company are as follows. AgeFrequency0−201520−403640−601360+16 Find the probability that an employee chosen at random will be aged between 20 and 40 years.

Total number of employees = 80 Number of employees aged between 20 and 40 years = 36 Hence, the probability that an employee chosen at random will be aged between 20 and 40 years =3680=0.45.

The ages of 80 employees of a company are as follows.

$\begin{matrix} A g e & F r e q u e n c y 0 - 20 & 15 20 - 40 & 36 40 - 60 & 13 60 + & 16 \end{matrix}$

Find the probability that an employee chosen at random will be aged between 20 and 40 years.

Total number of employees = 80
Number of employees aged between 20 and 40 years = 36

Hence, the probability that an employee chosen at random will be aged between 20 and 40 years
$= \frac{36}{80} = 0.45.$