Statistics for Business & Economics
12th Edition
ISBN: 9781285528830
Author: David R. Anderson
Publisher: Cengage Learning US
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Chapter 11.1, Problem 4E
The variance in drug weights is critical in the pharmaceutical industry. For a specific drug, with weights measured in grams, a sample of 18 units provided a sample variance of s2 = .36.
- a. Construct a 90% confidence
interval estimate of the population variance for the weight of this drug. - b. Construct a 90% confidence interval estimate of the population standard deviation.
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Chapter 11 Solutions
Statistics for Business & Economics
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