(Solved): Laboratory experiments designed to measure LC50 (lethal concentration killing 50% of the test speci ...

Laboratory experiments designed to measure LC50 (lethal concentration killing $$50\%$$ of the test species) values for the effect of certain toxicants on fish are run by two different methods. One method has water continuously flowing through laboratory tanks, and the other method has static water conditions. For purposes of establishing criteria for toxicants, the Environmental Protection Agency (EPA) wants to adjust all results to the flow-through condition. Thus, a model is needed to relate the two types of observations. Observations on toxicants examined under both static and flow-through conditions yielded the data in the accompanying table (measurements in parts per million, ppm). Fit the model $$Y={?}_0+{?}_{1}x+?$$. a What interpretation can you give to the results? b Estimate the flow-through value for a toxicant with an LC50 static value of $$x=12\mathrm{ppm}$$.