# Question: Environmentalists are concerned about emissions of sulfur dioxide into the

Environmentalists are concerned about emissions of sulfur dioxide into the air. The average number of days per year in which sulfur dioxide levels exceed 150 milligrams per cubic meter in Milan, Italy, is 29.The number of days per year in which emission limits are exceeded is normally distributed with a standard deviation of 4.0 days.

What percentage of the years would average between 21 and 37 days of excess emissions of sulfur dioxide? What percentage of the years would exceed 37 days?

What percentage of the years would exceed 41 days? In what percentage of the years would there be fewer than 25 days with excess sulfur dioxide emissions?

What percentage of the years would average between 21 and 37 days of excess emissions of sulfur dioxide? What percentage of the years would exceed 37 days?

What percentage of the years would exceed 41 days? In what percentage of the years would there be fewer than 25 days with excess sulfur dioxide emissions?

**View Solution:**## Answer to relevant Questions

Shown below are the per diem business travel expenses in 11 international cities listed by Business Affairs of Oregon State University. Use this list to calculate the z scores for Moscow, Beijing, and Paris. Treat the list ...A random sample of voters in Nashville, Tennessee, is classified by age group, as shown by the following data.Age Group ..... Frequency18–under 24 ...... 1724–under 30 ...... 2230–under 36 ...... 2636–under 42 ...The 2010 U.S. Census also asked for each person’s age. Suppose that a sample of 40 households taken from the census data showed the age of the first person recorded on the census form to be as follows.The following are the per capita GDP figures for eight eastern European countries according to International Monetary Fund sources. Note: The per capita GDP for the United States is $48,328.Country ......... Per Capita GDP ...According to Chebyshev’s theorem, how many standard deviations from the mean would include at least 80% of the values?Post your question