1. The mean risk score for people leaving prison is 34. You want to know if this risk score is lower for people who earned a college degree while incarcerated. You sample 100 people and get an average risk score of 20 with a standard deviation of 6. Is the mean risk score for people who earned a college degree while incarcerated statistically significantly different using an alpha level (p-value) of 0.05?
   1. What is the hypothesis and null hypothesis?
   2. Interpret your results.