A researcher is interested in comparing the maturity level of students who volunteer for community service versus those who do not. The researcher assumes that those who perform community service will have higher maturity scores. Maturity scores tend to be skewed (not normally distributed). The maturity scores appear next. Higher scores indicate higher maturity levels.

No Community Service                                 Community Service

33………………………………………………………………………….41

41………………………………………………………………………….48

54………………………………………………………………………….61

13………………………………………………………………………….72

22………………………………………………………………………….83

26………………………………………………………………………….55

a. What statistical test should be used to analyze these data?

b. Identify H₀ and H_a for this study.

c. Conduct the appropriate analysis.

d. Should H₀ be rejected? What should the researcher conclude?