A health psychologist compared the effectiveness of three different programs to encourage people who have been prescribed high blood pressure medication to actually take their medication regularly. Twenty high blood pressure patients were randomly assigned to each condition (i.e., there were a total of 60 participants). A questionnaire completed by these patients two weeks later found that the mean number of days those in Condition A had taken their medication was 9 (S2= 4.5); the mean number of days for the Condition B participants was 12.3 (S2= 5.5); and the mean number of days for the Condition C participants was 11.7 (S2= 5.0).

Based on these results, is there any difference in the effectiveness of the three programs? (Use the .05 level.)

a.) Use the five steps of hypothesis testing to determine a result.