Question

(ü) at most 59
9. Given below is the frequency distribution table of
salary (in) of 80 workers in a factory:
Salary
1000 - 2000 - 3000 - 4000 - 5000 -
(in)
2000 3000 4000 5000 6000
Number
of
8 14
20 24 14
workers
Find the probability that the salary of a worker
selected at random is
(i) less than 4000.
(ii) more than or equal to 3000.
(ii) more than or equal to 2000 but less than
5000.
[CBSE 2013)​

Answer 1

Answer:

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