(Answered) In a clinical trial of a vaccine 12000 children were

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In a clinical trial of a? vaccine, 12,000 children were randomly divided into two groups. The subjects in group 1? (the experimental? group) were given the vaccine while the subjects in group 2? (the control? group) were given a placebo. 6,000 children in the experimental? group,73 developed the disease. Of 6,000 children in the control? group, 119 developed the disease.

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