Nine tests of a new jet engine yielded a mean thrust of 7600 pounds with a standard deviation of 90 pounds. What is a 95% confidence interval for the true mean thrust of this engine? 7600 pounds ± 56 pounds 7600 pounds ± 30 pounds 7600 pounds ± 90 pounds 7600 pounds ± 69 pounds

Nine tests of a new jet engine yielded a mean thrust of 7600 pounds with a standard deviation of 90 pounds. What is a 95% confidence interval for the true mean thrust of this engine? 7600 pounds ± 56 pounds 7600 pounds ± 30 pounds 7600 pounds ± 90 pounds 7600 pounds ± 69 pounds

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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Estimation

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Question

Nine tests of a new jet engine yielded a mean thrust of 7600 pounds with a standard
deviation of 90 pounds. What is a 95% confidence interval for the true mean thrust of
this engine?
7600 pounds ± 69
7600 pounds + 56
pounds
7600 pounds ± 90
pounds
7600 pounds ± 30
pounds
pounds

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