Over a 10 year time frame, what option would be more cost effective: buying or leasing residential solar?

I have to answer the following questions based
on my research question “Over a 10 year time frame, what option would
be more cost effective: buying or leasing residential solar?

I don’t have to actually collect any data, it’s just thinking hypothetically. The five questions I have to answer are:

•  Identify
the types of descriptive statistics that might be best for summarizing the
data, if you were to collect a sample.

•  Analyze
the types of inferential statistics that might be best for analyzing the data,
if you were to collect a sample.

•  Analyze
the role probability or trend analysis might play in helping address the
business problem. 

•  Analyze
the role that linear regression for trend analysis might play in helping
address the business problem.

•  Analyze
the role that a time series might play in helping address the business problem.

Has to be in APA 6th edition format.

Attached is the assignment I did for last week that this weeks assignment is based on.