Assume that each sample is a simple random sample obtained from a normally distributed population. Use Table

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Assume that each sample is a simple random sample obtained from a normally distributed population. Use Table 7-2 to find the indicated sample size.


Data in Table 7-2

You want to estimate σ for the population of diastolic blood pressures of air traffic controllers in the United States. Find the minimum sample size needed to be 95% confident that the sample standard deviation s is within 1% of σ. Is this sample size practical?

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Elementary Statistics

ISBN: 9780136803201

14th Edition

Authors: Mario F. Triola

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