The article "The Statistics of Phytotoxic Air Pollutants"
Chapter 4, Problem 76E(choose chapter or problem)
Problem 76E
The article "The Statistics of Phytotoxic Air Pollutants" (J. of Royal Stat Soc., 1989: 183-198) suggests the lognormal distribution as a model for SO2 concentration above a certain forest. Suppose the parameter values are μ = 1.9 and σ = .9.
a. What are the mean value and standard deviation of .concentration?
b. What is the probability that concentration is at most 10? Between 5 and 10?
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