For a Hypothesis Test Evaluating the Effect of a Treatment

Multiple Choice

For a hypothesis test evaluating the effect of a treatment on a population mean,what basic assumption is made concerning the treatment effect?

A) If there is a treatment effect, it will increase the scores.
B) If there is a treatment effect, it will decrease the scores.
C) If there is a treatment effect, it will add (or subtract) a constant to each score.
D) If there is a treatment effect, it will multiply (or divide) each score by a constant.