PART ONE

You want to study the effects of sleep on creativity. You design a 15-item test to measure the degree of creativity. You get 20 subjects for your experiment. Each subject falls into one of four sleep categories: they got 2 hours, 4 hours, 6 hours or 8 hours of sleep before taking the survey. Their scores are listed below. Higher scores are indicative of greater creativity. (1 pt. each)

2 Hours	4 Hours	6 Hours	8 Hours
3	4	10	10
5	7	11	13
6	8	13	10
4	3	9	9
2	2	10	10

1. What are the null and alternate hypotheses for this study?
2. Using SPSS, calculate the ANOVA. What is the observed value of F?
3. What is the critical value of F?
4. What decision do you make concerning the null hypothesis?

Calculate and interpret the appropriate effect size.