Dr. Jones wanted to know if the use of the Good Behavior Game decreased rates of disruptive behaviors in an elementary school. Dr. Jones collected data throughout the duration of the school year across two elementary schools. In school A, all k-6 classrooms used the Good Behavior Game. In School B, no classrooms used the Good Behavior Game. At the end of the school year, Dr. Jones concluded that the Good Behavior Game had no impact on student disruptive behavior, when in fact it had. This is an example of: a) Type I error
b) Type II error
c) positive
d) A null hypothesis