In Q.5, Exercise 14.2, you were asked to prepare a frequency distribution table

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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.

Report

Question

Total number of days recorded = 30 days

Number of days in which sulphur dioxide is in the interval 0.12 - 0.16 = 2

Hence,

Probability of days in which SO₂ is in the interval 0.12 – 0.16 will be

= Number of days in which sulphur dioxide is in the inetrval 0.12-0.16/Total no. of days recorded

= 2/30

= 1/15

solved 5

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