After reading the extra credit assignment, it looks like I need to use 3 different formulas/tests in order answer the questions. Can you please help

After reading the extra credit assignment, it looks like I need to use 3 different formulas/tests in order answer the questions. Can you please help me figure out which ones to use? We have studied chi square, chi square of association, t test, z scores, and f test. Also lambda and gamma so I am thinking the formulas/tests need to be one of the ones listed.