For each of the situations below, identify an example of a Type II error.

a. A snowboarder tries two different kinds of wax to see which one lasts longer.

b. A high school counselor wants to see whether students who pay for test preparation services are more likely to get into college than students who take free practice exams.

c. A driver trying to save money uses both regular and premium gasoline and wants to know whether the type of gasoline affects her car’s performance.