A group of therapists at a local university want to test a method for increasing the number of sessions used by students who come to their counseling center.Current data indicates that the mean number of sessions used by student clients is 4.6.The therapists decide to promote an intervention whereby new clients sign a contract agreeing to attend at least 10 sessions.They obtain a sample of eight participants who agree to sign the contracts, tracking the number of sessions they attend:

Students No. of Sessions TTT. T. T. T