(See Steps) After the pilot study described in Problem 2, the main trial is conducted and involves a total of 200 patients. Patients are enrolled and randomized


Question: After the pilot study described in Problem 2, the main trial is conducted and involves a total of 200 patients. Patients are enrolled and randomized to receive either the experimental medication or the placebo. The data shown in Table 6-7 are data collected at the end of the study after 6 weeks on the assigned treatment. Generate a 95% confidence interval for the difference in pro- portions of patients with hypertension between groups.

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