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The frequency distribution of life of 90...

The frequency distribution of life of 90 TV tubes whose median life is 17 months is as follows


What is the cumulative frequency of the model class?

A

31

B

35

C

66

D

cannot be computed from the given data

Text Solution

Verified by Experts

The correct Answer is:
C

Since, `n=90thetefore (n)/(2)=45`
Cumulative frequency of model class is 66.
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