CBSE Class-9 Maths NCERT solution - Probability - Exercise 15.1 - Problem 12
In Q.5, Exercise 14.2, you were asked to prepare a frequency distribution table, regarding
the concentration of sulphur dioxide in the air in parts per million of a certain city for
30 days. Using this table, find the probability of the concentration of sulphur dioxide
in the interval 0.12 - 0.16 on any of these days.
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