Question

5. 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, 115 of 485 subjects in the experimental group (group 1) experienced fever as a side effect. After the second dose, 106 of 574 of the subjects in the control group (group 2) experienced fever as a side effect. Does the evidence suggest that a higher proportion of subjects in group 1 experienced fever as a side effect than subjects in group 2 at the α: 0.10 level of significance? Verify the model requirements. Select all that apply n1P1 1-P1 2 10 and n2p2 1-P2 210 □ B. The samples are independent. C. The data come from a population that is normally distributed □ D. The sample size is more than 5% of the population size for each sample □ E. The sample size is less than 5% of the population size for each sample F. The samples are dependent. Determine the null and alternative hypotheses P2 H1 P1 (2) P2 Find the test statistic for this hypothesis test. (Round to two decimal places as needed.) Determine the P-value for this hypothesis test. (Round to three decimal places as needed.)

Answer 1

f th oould e greater than e population s are e one xpect a scple differenes proportion the one obsved in about 2 out of )00 repetitions of this e Reject Ho There ia suffitient evidence to conclude-that-a-higher-proportion of subitects in group 1 cxpeienced fever as a side effeci the_subtecte in group 2-at -the-reo lo

ven lIS 485 n i 及 coe coant to test m) o d e l requirements. 一. The-sumpit-are-independent The sample sizis less than indeendent of hc penulahor uwlation Tesfstatistic 2 P, - Pa Z-0-23 48S- 2 0 0 252 乙二 2-0635