A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 229 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related? Vaccination Status Diseased Not Diseased Total Vaccinated 68 71 139 Not Vaccinated 47 43 90 Total 115 114 229 Step 6 of 8 : Find the critical value of the test at the 0.025 level of significance. Round your answer to three decimal places.