Blood pressure of executives. The medical director of a large company looks at the medical records of
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Blood pressure of executives. The medical director of a large company looks at the medical records of 72 executives between the ages of 35 and 44 years. He finds that the mean systolic blood pressure in this sample is x = 126.1 and the standard deviation is s = 15.2.
Assuming the sample is a random sample of all executives in the company, find a 95% confidence interval for μ, the unknown mean blood pressure of all executives in the company.
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Related Book For 
Statistics Concepts And Controversies
ISBN: 9781429277761
7th Edition
Authors: David S Moore, William I Notz
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