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Confidence interval for blood pressure

Fifteen patients who suffer from high blood pressure were given a drug that is supposed to lower blood pressure. If X denotes the amount of a patient's decrease from his or her normal blood pressure and if the sample from 15 produced the estimate = 5 and s = 8, find a 95 percent confidence interval for using small sample methods.

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The solution shows how to solve for a confidence interval using small sample methods for a number of patients experiencing high blood pressure.

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