Given below is the frequency distribution table regarding the concentration of sulphur dioxide in the air in parts per million of a certain city for 30 days.
`{:("Concentration", 0.00-0.04, 0.04-0.08, 0.08-0.12, 0.12-0.16, 0.16-0.20, 0.20-0.24), ("No. of days":, 4, 8, 9, 2, 4, 3):}`
Find the probability of concentration of sulphur dioxide in the interval 0.12-0.16 on any of these days.

Explanation

Total number of outcomes=`30`
P(concentration of sulphur dioxide in the interval 0.12-0.16)=`2/30=1/15`