A Researcher Is Interested in Comparing the Self-Esteem of Students

question 13

Essay

A researcher is interested in comparing the self-esteem of students who volunteer for community service versus those who do not. The researcher assumes that those who complete community service will have higher self-esteem scores. Self-esteem scores tend to be skewed (not normally distributed). The self-esteem scores appear below. Higher scores indicate higher self-esteem levels.
No Community Service Community Service

a) What statistical test should be used to analyze these data?
b) Identify H0 and Ha for this study.
c) Conduct the appropriate analysis.
d) Should H0 be rejected? What should the researcher conclude?

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Definitions:

Nuclei

Cellular organelles that contain the majority of an organism's genetic material (DNA), acting as the control center of the cell.

Ganglia

Structures containing a group of nerve cell bodies, typically linked to the peripheral nervous system.

Myelencephalon

The posterior part of the brainstem, comprising the medulla oblongata, involved in regulating vital bodily functions.

Medulla Oblongata

A part of the brainstem involved in autonomic functions, such as breathing, heart rate, and blood pressure.