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Confidence interval for the difference

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In randomized double blind clinical trials of a new vaccine, infants 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 first dose, 108 of 730 subjects in the experimental group (group 1) experienced vomiting as a side effect. After the first dose, 73 of 643 subjects in control group (group 2) experienced vomiting as a side effect.

Construct a 90% confidence interval for the difference between the two population proportions p1-p2. Use x1=108 n1=730, x2=73, and n2= 643

Reference no: EM131966678

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