"Think of an evaluation study involving two competing curricula [A & B], where the objective is to maximize student motivation. Suppose that you can conduct the study using random sampling and assignment of students selected from a particular school system and that a good method of measuring student motivation is available to you" (Jaeger, 1990, p. 193).

a. State an appropriate null hypothesis

b. State an appropriate alternative hypothesis

c. Describe a Type I error in the context of this study

d. Describe a Type II error in the context of this study