Propose a Research Study and Include Information Regarding the Following

Propose a research study and include information regarding the following study elements:
a. name the independent variable in this study
b. name the dependent variable in this study
c. Wwhat does it mean to say that the differences between groups are statistically significant?
d. evaluate the study's internal validity, identify what threat(s) to internal validity you believe might be present, and state how you might safeguard the study to control for those threats.
e. show that you understand the concept of external validity by identifying potential external validity concerns in this study
f. evaluate the study's ecological validity