9.1 Probabilistic Models
An important consideration in taking a drug is how it may affect one’s perception or general awareness. Suppose you want to model the length of time it takes to respond to a stimulus (a measure of awareness) as a function of the percentage of a certain drug in the bloodstream. The first question to be answered is this: “Do you think that an exact relationship exists between these two variables?” That is, do you think that it is possible to state the exact length of time it takes an individual (subject) to respond if the amount of the drug in the bloodstream is known? We think that you will agree with us that this is not possible, for several reasons: The reaction time depends on many variables other than the percentage ...
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