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# (Solved): In randomized, double-blind clinical trials of a new vaccine, rats were randomly divided into t ...

In randomized, double-blind clinical trials of a new vaccine, rats 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, 100 of 742 subjects in the experimental group (group 1) experienced drowsiness as a side effect. After the second dose, 57 of 623 of the subjects in the control group (group 2) experienced drowsiness as a side effect. Does the evidence suggest that a higher proportion of subjects in group 1 experienced drowsiness as a side effect than subjects in group 2 at the level of significance? 3. The sample size is less than of the population size for each sample. The sample size is more than of the population size for each sample. 1. and E. The data come from a population that is normally distributed. F. The samples are dependent. Determine the null and alternative hypotheses Find the test statistic for this hypothesis test. (Round to two decimal places as needed.)

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