Attempt 2
Question 8 of 16
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Emissions of sulfur dioxide by industry set off chemical changes in the atmosphere that result in "acid rain",
The acidity of liquids is measured by pH on a scale of 0 to 14. Distilled water has pH 7.0, and lower pH values indicate
acidity. Normal rain is somewhat acidic, so "acid rain" is sometimes defined as rainfall with a pH below 5.0,
The pH of rain at one location varies among rainy days according to a Normal distribution with mean 543 and standard
deviations 0.54
What proportion of rainy days have rainfall with pH below 5.02 Use software or Table A to find the answer,
(Enter your answer rounded to four decimal)