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Question 24 (3 points) In randomized, double-blind clinical trials of a new vaccine, monkeys 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, 105 of 740 subjects in the experimental group (group 1) experienced fever as a side effect. After the second dose, 64 of 632 of the subjects in the control group (group 2) experienced fever as a side effect. The evidence suggests that a higher proportion of subjects in group 1 experienced fever as a side effect than subjects in group 2 at the a - 0.05 level of significance (P- value = 0.011). Correctly interpret the P-value. [3 points] a) If the population proportions are not equal, one would expect a sample difference proportion greater than the one observed in about 1 out of 100 repetitions of this experiment. b) If the population proportions are not equal, one would expect a sample difference proportion smaller than the one observed in about 1 out of 100 repetitions of this experiment. c) If the population proportions are equal, one would expect a sample difference proportion smaller than the one observed in about 1 out of 100 repetitions of this experiment. ( d) If the population proportions are equal, one would expect a sample difference proportion greater than the one observed in about 1 out of 100 repetitions of this experiment. Previous Page Next Page Page 23 of 23