In randomized, double-blind clinical trials of a new vaccine, children were randomly divided into two groups. Subjects in group 1 received the new vaccine while subjects in group 2 received a control vaccine. After the second dose, 136 of 450 subjects in the experimental group (group 1) experience drowsiness as a side effect. After the second dose, 39 of 95 of the subjects in the control (group 2) experienced drowsiness as a side effect. Does the evidence suggest that a different proportion of subjects in group 1 experienced drowsiness as a side effect than subjects in group 2 at the a = 0.05 level of significance?
What is the result of this hypothesis test?
A. Reject the null hypothesis because there is sufficient evidence to conclude that the population proportions are different.
B. Accept the alternative hypothesis because there is sufficient evidence to conclude that the population proportions are different.
C. Do not reject the null hypothesis because there is not sufficient evidence to conclude that the population proportions are different.