एक नगर में वायु में सल्फर डाई-ऑक्साइड का सांद्रण भाग प्रति मिलियन में ज्ञात करने के लिए एक अध्ययन किया गया। 30 दिनों के प्राप्त किए गए आँकड़े ये है:
`{:(0.03,0.08,0.08,0.09,0.04,0.17,0.16,0.05,0.02,0.06),(0.18,0.20,0.11,0.08,0.12,0.13,0.22,0.07,0.08,0.01),(0.10,0.06,0.09,0.18,0.11,0.07,0.05,0.07,0.01,0.04):}`
इस सारणी की सहायता से इनमे से किसी एक दिन अंतराल (0.12-0.16) में सल्फर डाई-ऑक्साइड के सांद्रण होने की प्रायिकता ज्ञात कीजिए।

0.5, 0.55, 0.65, 0.8 , ?

0.5, 0.55, 0.65, 0.8, ?

(0.7xx0.05xx0.004)/(0.07xx0.04)=

0.1, 0.9, 0.01, 0.09 ______ 0.009

(0.06xx0.06xx0.06-0.05xx0.05xx0.05)/(0.06xx0.06+0.06xx0.05+0.05xx0.05) gives

Solve 0.01(t-0.2)+0.09t-0.08=0

A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. The data obtained for 30 days is as follows : {:(0.03,0.08,0.08,0.09,0.04,0.17),(0.16,0.05,0.02,0.06,0.18,0.20),(0.11,0.08,0.12,0.13,0.22,0.07),(0.08,0.01,0.10,0.06,0.09,0.18),(0.11,0.07,0.05,0.07,0.01,0.04):} (ii) For how many days, was the concentration of sulphur dioxide more than 0.11 parts per million ?