2.35 To measure the effect of certain toxicants found in water, concentrations that kill 50% of the fish in a tank over a fixed period of time (LC50s) are determined in laboratories. There are two methods for conducting these experiments. One method has water continuously flowing through the tanks, and the other has static water conditions. The Environmental Protection Agency (EPA) wants to adjust all results to the flowthrough conditions.
a Given the data in table at the right on a sample of 10 toxicants, establish a model that will allow adjustment of the static values to corresponding flow-through values.
b Do you see any problems with using this prediction model for new static values anywhere between 0 and 40? Explain.

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Flow-Through Static 23.00 39.00 22.30 37.50 9.40 22.20 9.70 17.50 0.15 0.64 0.28 0.45 0.75 2.62 0.51 2.36 28.00 32.00 0.39 0.77