A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.14 inch. (a) Determine the minimum sample size required to construct a 99% confidence interval for the population mean. Assume the population standard deviation is 0.6 inch. (b) The sample mean is 27.4 inches. With a sample size of 131, a 99% level of confidence, and a population standard deviation of 0.6 inch, does it seem possible that the population mean could be less than 27.5 inches?
A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.14 inch. (a) Determine the minimum sample size required to construct a 99% confidence interval for the population mean. Assume the population standard deviation is 0.6 inch. (b) The sample mean is 27.4 inches. With a sample size of 131, a 99% level of confidence, and a population standard deviation of 0.6 inch, does it seem possible that the population mean could be less than 27.5 inches?
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A soccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.14 inch.
(a) Determine the minimum sample size required to construct a 99% confidence interval for the population mean. Assume the population standard deviation is 0.6 inch.
(b) The sample mean is 27.4 inches. With a sample size of
131, a 99% level of confidence, and a population standard deviation of 0.6 inch, does it seem possible that the population mean could be less than
27.5 inches?
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