A soccer ball manufacturer wants to estimate the mean circumference of mini-soccer balls within 0.15 inch. Assume
Question:
(a) Determine the minimum sample size required to construct a 99% confidence interval for the population mean. Assume the population standard deviation is 0.20 inch.
(b) Repeat part (a) using a population standard deviation of 0.10 inch.
(c) Which standard deviation requires a larger sample size? Explain.
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a n z c E 2 2575 020 015 2 11788 12 soccer balls b ...View the full answer
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Jehal Shah
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Related Book For 
Elementary Statistics Picturing The World
ISBN: 9780321911216
6th Edition
Authors: Ron Larson, Betsy Farber
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