Given below is the frequency distribution of wages (in Rs) of 30 workers in a certain factory:

A worker is selected at random. Find the probability that his wages are less than Rs 150."

Given:

The frequency distribution of wages (in Rs) of 30 workers in a certain factory.

A worker is selected at random.

To do:

We have to find the probability that his wages are less than Rs 150.

Solution:

Total number of workers $=30$

Number of workers whose wages are less than Rs. 150$=3 + 4 = 7$

We know that,

Probability of an event=$ \frac{Number \ of \ favourable \ outcomes}{Total \ number \ of \ outcomes}$

Therefore,

Probability that his wages are less than Rs 150 $=\frac{7}{30}$

The probability that his wages are less than Rs 150 is $\frac{7}{30}$.     

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Updated on: 10-Oct-2022

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