A sample of 12 items yields X = 48.5 grams and s = 1.5 grams. Assuming a normal distribution, construct a 90 percent confidence interval for the population mean weight.[45.806 51.194][47.788 49.212][47.865 49.135][47.722 49.278]

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Answered: A sample of 12 items yields X = 48.5…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A sample of 12 items yields X = 48.5 grams and s= 1.5 grams. Assuming a normal distribution, construct a 90 percent confidence interval for the population mean weight. [45.806 51.194] [47.788 49.212] [47.865 49.135] [47.722 49.278]