To properly treat patients, drugs prescribed by physicians must not only have a mean potency value as

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To properly treat patients, drugs prescribed by physicians must not only have a mean potency value as specified on the drug's container, but also the variation in potency values must be small. Otherwise, pharmacists would be distributing drug prescriptions that could be harmfully potent or have a low potency and be ineffective. A drug manufacturer claims that his drug has a potency of 5 ± .1 milligram per cubic centimeter (mg/cc). A random sample of four containers gave potency readings equal to 4.94, 5.09, 5.03, and 4.90 mg/cc. a. Do the data present sufficient evidence to indicate that the mean potency differs from 5 mg/cc?
b. Do the data present sufficient evidence to indicate that the variation in potency differs from the error limits specified by the manufacturer?
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Introduction To Probability And Statistics

ISBN: 9781133103752

14th Edition

Authors: William Mendenhall, Robert Beaver, Barbara Beaver

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