Question

A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 227 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related?

Vaccination Status           Diseased              Not Diseased    

Vaccinated                          41                           103        

Not Vaccinated                 59                           24          

b. State the null and the alternate hypotheses.

c. State the degrees of freedom and the critical value – use the chi-square chart and a 0.01 level of significance.

d. Use your calculator to determine the test statistic and the p-value.

e. Conclude the test by comparing the test statistic and the critical value.

f. Conclude the test by comparing the p-value and the level of significance.

g. State your conclusion IN CONTEXT.

Answer 1