Am doing degree course and stuck on statistics question, need resolved quickly. Research hypothesis : The time served in the Australian construction industry has an effect in relation to...

Am doing degree course and stuck on statistics question, need resolved quickly.

Research hypothesis: The time served in the Australian construction industry has an effect in relation to incident/injury reporting.

Null hypothesis:
The time served in the Australian construction industry has no affect in relation to incident/injury reporting.
Whilst I have the data on attached excel spreadsheet and basic answer, it is not the scientific one I need. Have been playing around trying to find best solution, t-tests etc. and cant find best solution. I need resolved and workings please.
Excel sheet attached


Sheet1 All Reported%Not Reported%Not Reported Years in Australian Construction IndustryCount%Total 0-5 Years1111.46%618.18%57.94%1145.45% 5-10 Years1717.71%824.24%914.29%1752.94% 10-15 Years1212.50%13.03%1117.46%1291.67% 15-20 Years1515.63%39.09%1219.05%1580.00% 20+ Years4142.71%1545.45%2641.27%4163.41% Total96100.00%33100.00%63100.00% Incident/Injury Non-Reporting by Years Worked All0-5 Years5-10 Years10-15 Years15-20 Years20+ Years0.454545454545454530.529411764705882360.916666666666666630.80.63414634146341464Australia0-5 Years5-10 Years10-15 Years15-20 Years20+ Years0.50.50.888888888888888840.777777777777777790.6875Rest of the World0-5 Years5-10 Years10-15 Years15-20 Years20+ Years0.428571428571428550.5555555555555555810.833333333333333370.44444444444444442 Incident/Injury Non-Reporting by Years Worked All0-5 Years5-10 Years10-15 Years15-20 Years20+ Years0.454545454545454530.529411764705882360.916666666666666630.80.63414634146341464Australia0-5 Years5-10 Years10-15 Years15-20 Years20+ Years0.50.50.888888888888888840.777777777777777790.6875Rest of the World0-5 Years5-10 Years10-15 Years15-20 Years20+ Years0.428571428571428550.5555555555555555810.833333333333333370.44444444444444442