Drug Potency, continued Refer to Exercise. Testing of 60 additional randomly selected containers of…

Drug Potency, continued Refer to Exercise. Testing of 60 additional randomly selected containers of…

Drug Potency, continued Refer to Exercise. Testing of 60 additional randomly selected containers of the drug gave a sample mean and variance equal to 5.04 and .0063 (for the total of n = 64 containers). Using a 95% confidence interval,estimate the variance of the manufacturer’s potency measurements.

Exercise:

Drug Potency To properly treat patients, drugs prescribed by physicians must have a potency that is accurately defined. Consequently, not only must the distribution of potency values for shipments of a drug have a mean value as specified on the drug’s container, but also the variation in potency 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 is marketed with 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.

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