Answered: a) Construct a 68.26% confidence…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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You may need to use the appropriate appendix table or technology to answer this question. A sample of 169 cans of coffee showed an average weight of 128 ounces. The standard deviation of the population is known to be 1.1 ou (a) Construct a 68.26% confidence interval for the mean of the population (in ounces). (Round your answers to two decimal places.) oz to (b) Construct a 97% confidence interval for the mean of the population (in ounces). (Round your answers to two decimal places.) oz to 02 (c) Discuss why the answers in parts (a) and (b) are different As the level of confidence increases, the entire confidence interval shifts farther to the left. O As the level of confidence increases, the confidence interval becomes narrower. As the level of confidence increases, the confidence interval becomes wider. © As the level of confidence increases, the entire confidence interval shifts farther to the right O The answers in parts (a) and (b) are actually the same.

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