help!

https://www.researchgate.net/publication/341880223_2_k_Optimization_approach_for_the_removal_of_Pb_2_ions_from_water_contaminated_from_oil-well_drilling_point_on_to_MWCNTs

3. Consider the experiment described in Gbajahiamila et al. (2013). This article is available in the Homework 5 folder on Blackboard. a. Answer the following questions about the design of this experiment. i. iii. iv. 1:. vi. What type of experimental design was implemented in this experiment? Be as specic as possible. What are the factors of interest in this experiment? What is the experimental unit in this experiment? What is the response variable in this experiment? Is randomization implemented in this design? Justify your answer. Is replication implemented in this design? Justify your answer. Is blocking implemented in this design? Justify your answer. b. Provide the factor effects model the researchers used to analyze the data from this exper- iment. Dene each term in this model. (NOTE: The factor effects model is not explicitly provided in the article. but you can determine the model used from the ANOVA table provided in the article.)