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21-11-2022
Mathematics

Answered

two new drugs were given to patients with hypertension. the first drug lowered the blood pressure of 16 patients an average of 11 points, with a standard deviation of 6 points. the second drug lowered the blood pressure of 20 other patients an average of 12 points, with a standard deviation of 8 points. determine a 95% confidence interval for the difference in the mean reductions in blood pressure, assuming that the measurements are normally distributed with equal variances.

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