Analyzing Correlation and Causation: Statistics Correlation Variables

Analyzing Correlation and Causation - real-life situations for example hospital staffing shortage and increased consumer demand that might show a correlation. 
Determine whether the correlation is positive or negative.
Describe how someone might infer that one event "causes" the other.
Decide if this causation is reasonable, or if there is another explanation for why the two events are correlated. 
How might you decide, using scientific methods, whether one variable actually causes the other to occur?
1- to 2-paragraph write-up including the following:
Using scientific methods, explain how you determined whether one variable causes the other to occur.
In the example you chose, describe what factors you need to be aware of when trying to establish a causal relationship. Decide whether the scenario represents a case of positive or negative correlation, and explain your choice.
Reference
Bennett, J.O., Briggs, W. L., and Triola, M.F. (2009). Statistical reasoning for everyday life. (3rd ed.). Boston: Addison-Wesley.