Answer:
Factors of production example for manufacturing pencil 
Explanation:
Four factors of production are :
Land, Labour, Capital, Entrepreneur 
Examples in case of manufacturing a pencil : 
Land : Factory land required, Capital : Funds required for fixed factor (eg machine) & variable factor (eg  raw material - wood), Labour : People required to work on machines with raw material (wood), Entrepreneur : The person supplying managerial skills for pencil' enterprise operation. 
 
        
             
        
        
        
The answer below may help in solving the problem stated above:
The older waiter's attitude would fit Hemingway's. 
Explanation:
The younger waiter shows anger and is not understanding of the old man but the older waiter can relate to him. The younger waiter seemed to be annoyed by the old man and appeared to just want to go home. 
 
        
             
        
        
        
The correct answer is - This research would be eligible for exemption because the researcher is not interacting with the children and the playground is a public setting. This type of research does not need IRB (IRB being institutional review board also known as ethics committee) review because the researcher will not be interacting with the children in anyway, it is purely observational and the setting is a public place, in addition all children will remain anonymous in the study, therefore the researcher is not breaking any code of ethics. 
 
        
             
        
        
        
Answer: Experimental
Explanation:
Experimental study is the study in which researcher has some control over the variables where he can experiment and test over the groups. Observational study provides no control to researcher .He can only observe the process.
According to the question, study conducted by farmer is experimental as farmer has the control over quantity variable of land , grouping choice of crop etc.He is dividing  the land equally in four parts,sowing same crops into 4 groups in each piece depicts that he is testing or experimenting everything equally.