I need help how to conduct this research study. I am doing statistics research project as to Is Texas affortable then california

I am thinking of doing and observational study collecting data from reliable sources .

I need help on some of my research question

1.What will be my best observational study. what factors can I consider while deciding affordability of both the states.

2.What can be my hypothesis .my null hypothesis or alternative hypothesis for my research study on the two states.

3.What factors I can use to compare and corelate my research study.