Green marketing as a mediator

Consider the article “Green marketing as a mediator between supply chain management and organizational performance”

1. Explain unobserved variable, and how many unobserved variables are in the model?
2. Explain observed variable, and how many observed variables are in the model?
3. Discuss the function of exogenous variable, and how many Exogenous variables are in the model?
4. How many latent variables are in the model?
5. Calculate sample size of the model? What sample size the researcher selected? Comment on the discrepancy of the required sample size and selected sample size?
6. Construct measurement model from the structure equation model.
7. Explain reliability of a construct, and calculate the composite reliability of the Green performance. (Note: exhibit your calculation)
8. Explain validity, and calculate the convergent validity of the Performance. (Note: exhibit your calculation)
9. Redraw Figure 4 and add the missing elements; so, the model could be run in SEM, AMOS.
10. Redraw the model by suggesting another appropriate mediating and a moderating model variable to the model. Draw the hypothetical observed variables of the proposed mediator and the levels of the moderator.
11. How many hypotheses are proposed in the model? and assess the significance of the hypotheses.
12. What does R2 = 0.57 mean.