One of the side-effects of flooding a lake in forest areas (e.g. for a hydro-electric project)...
One of the side-effects of flooding a lake in forest areas (e.g. for a hydro-electric project) is that mercury leached from the soil, enters the food chain and eventually contaminates fish. The concentration of the mercury in fish will vary among individual fish due to differences in eating patterns, movements around the lake, etc. Suppose that the concentrations of mercury in individual fish follows an approximate normal disribution with a mean of 0.27 ppm and a standard deviation of 0.08 ppm. Fish are safe to eat if the mercury level is below 0.30 ppm. What percentage of fish are safe to eat? Give your answer to the nearest percent percentage (%)-