A pediatrician's records showed the mean height of a random sample of 25 girls at age 12
Question:
(a) Construct a 95 percent confidence interval for the true mean height.
(b) What sample size would be needed for 95 percent confidence and an error of ±.20 inch? (Data are from a project by statistics students Lori Bossardet, Shannon Wegner, and Stephanie Rader.)
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Related Book For 
Applied Statistics In Business And Economics
ISBN: 9780073521480
4th Edition
Authors: David Doane, Lori Seward
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