Question

9. Given below is the frequency distribution table of
salary (in) of 80 workers in a factory:
Salary 1000 - 2000 - 3000 - 4000 - 5000
2000
3000 4000 5000 6000
14
20
24
8
Number
of
workers
Find the probability that the salary of a worker
selected at random is
(i) less than 4000.
(ii) more than or equal to 13000.
(iii) more than or equal to 2000 but less than
5000.
[CBSE 2013]
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Answer 1

Answer:

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