The article “Stochastic Estimates of Exposure and Cancer Risk from Carbon Tetrachloride Released to the Air from the Rocky Fats Plant” models the increase in the risk of cancer due to exposure to carbon tetrachloride as lognormal with µ = –15.65 and ? = 0.79.

a. Find the mean risk.
b. Find the median risk.
c. Find the standard deviation of the risk.
d. Find the 5th percentile.
e. Find the 95th percentile.


Let Y be the increase in the risk.

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