The clinical trial is conducted and involves a total of 200 patients. Patients a

Question

The clinical 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 below are data collected at the end of the study after 6 weeks on the assigned treatment. Experimental (n=100) Placebo (n=100) Mean (Std Dev) Systolic Blood Pressure 120.2 (15.4) 131.4 (18.9) % Hypertensive 14% 22% % With Side Effects 6% 8% n 100 100 Generate a 95% confidence interval for the difference in mean systolic blood pressures between groups. Lower Limit of CI: Upper Limit of CI: Based on the Confidence Interval values which of the following are true? A. One can be 95% confident that there is a statistically significant true difference in systolic blood pressure between groups. B. One can be 95% confident that there is not a statistically significant true difference in systolic blood pressures hypertension between groups. C. One can be 95% confident that the difference in systolic blood pressures will be outside the confidence interval limits. D. b and c

Explanation / Answer

B. One can be 95% confident that there is not a statistically significant true difference in systolic blood pressures hypertension between groups.

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