What information would you need to see if there is an association between Gilbert being on duty and code/death rates?

You are working as a statistician with the Boston Police department. You were given this case to work on to see if there is enough data to support an arrest warrant.
Kristen Gilbert started working at the VAMC as a nurse in 1989. A proficiency report obtained by the Boston Police Department, which described her as “highly skillful”, calm, and compassionate. She organized charity drives, collections for the needy, and organized a memorial service for a colleague who died of cancer .
⦁ What information would you need to see if there is an association between Gilbert being on duty and code/death rates?
⦁ What other explanations might there be for why Gilbert had more deaths on her shifts?
⦁ What type of statistical test would you use for this case to see if there is an association?
⦁ What are your null hypotheses and alternative hypotheses?
The following is an analysis of 1641 eight-hour shifts. Use this data to decide if there is enough statically support for an arrest warrant.