Define the folowing terms. (a) experimental unit (b) treatment (c) response variable (d) factor (e) placebo ( confounding (a) define experimental unit. choose the correct answer below. o a. a person, object, or some other well-defined item upon which a treatment is applied ? b. the quantitative or qualitative variable or which the experimenter wishes to determine how, its value is affected by the explanatory vanable o c. any combination of the values of the factors (explanatory variables) o d. an innocuous medication, such as a sugar tablet, that looks, tastes, and smells like the experimental medication (b) define treatment. choose the correct answer below. o a. the number of individuals in the experiment o b. the quantitative or qualitative variable for which the experimenter wishes to determine how its value is affected by the explanatory variable o c. any combination of the values of the factors (explanatory variables) ? d. a controlled study to determine the effect varying one or more explanatory variables or factors has on a response variable (c) define response variable. choose the correct answer below. o a. the quantitative or qualitative variable for which the experimenter wishes to determine how its value is affected by the explanatory variable o b. the effect of two factors (explanatory variables on the response variable) cannot be distinguished o c. an innocuous medication, such as a sugar tablet, that looks, tastes, and smells like the experimental medication o d. the variable whose effect on the response variable is to be assessed by the experimenter