2 Drugs for Hypertension A pharmaceuticalcompany wishes to know whether anexperimental
Chapter 2, Problem 72(choose chapter or problem)
2 Drugs for Hypertension A pharmaceuticalcompany wishes to know whether anexperimental drug being tested in its laboratories hasany effect on systolic blood pressure. Fifteenrandomly selected subjects were given the drug, andtheir systolic blood pressures (in millimeters) arerecorded.172 148 123140 108 152123 129 133130 137 128115 161 142a. Guess the value of s using the rangeapproximation.b. Calculate x and s for the 15 blood pressures.c. Find two values, a and b, such that at least 75% ofthe measurements fall between a and b.
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