Given below is the frequency distribution of salary (in र) of 100 workers in a factory:

Salary (in र)

Number of workers

1000–2000

10

2000–3000

30

3000-4000

20

4000-5000

40

Answer the following questions. How many workers

(i) have salary below र3000?
(ii) have salary between र3000 and र5000?
(iii) from र1000 to र5000?

Solution

Solution not provided.
Ans. $left parenthesis straight i right parenthesis space 2 over 5 space space left parenthesis ii right parenthesis space 3 over 5 space left parenthesis iii right parenthesis space 1$

Some More Questions From Introduction to Mathematical Modelling Chapter

Activity: Note the frequency of two wheelers, three wheelers and four wheelers going past during a time interval, in front of your school gate. Find the probability that any one vehicle out of the total vehicles you have observed is a two-wheeler.

Activity: Ask all the students in your class to write a 3-digit number. Choose any student from the room at random. What is the probability that the number written by her/him is divisible by 3 ? Remember that a number is divisible by 3, if the sum of its digits is divisible by 3.

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Introduction To Mathematical Modelling

Some More Questions From Introduction to Mathematical Modelling Chapter

Activity: Note the frequency of two wheelers, three wheelers and four wheelers going past during a time interval, in front of your school gate. Find the probability that any one vehicle out of the total vehicles you have observed is a two-wheeler.

Activity: Ask all the students in your class to write a 3-digit number. Choose any student from the room at random. What is the probability that the number written by her/him is divisible by 3 ? Remember that a number is divisible by 3, if the sum of its digits is divisible by 3.

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Salary (in र)	Number of workers
1000–2000	10
2000–3000	30
3000-4000	20
4000-5000	40