in a clinical trial of a​ vaccine 8,000 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. Of the 4,000 children in the experimental​ group, 87 developed the disease. Of the 4,000 children in the control​ group, 115 developed the disease. calculate the test statstic  Calculate the p score

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