That does make sense, and thank you Andrew. I guess I'm confused when it asks for the 'expected value'. Expected value of what? I'm assuming it wants the mean, but it just says 'expected value and standard deviation'. It's confusing.
1. The lognormal distribution is identified as a model for concentration of a certain organic matter above a certain stretch of a highway. The parameters of this distribution are sigma = 1.9 and sigma = 0.9. a) Determine the expected value and the standard deviation of such distribution. b) The...