A random sample of 90 observations produced a sample mean of 25.9 and a sample standarddeviation of 2.7. Which one of the following best approximates a 90% confidence interval for u?O 25.9 ± 0.56O (25.43 , 26.37)O (23.2 , 28.6)O 25.9 ± 5.4cannot be determined from the data

Answered: Image /qna-images/answer/a33d9338-f2d1-4a90-bca5-e8e1fa024d2b.jpg

Answered: A random sample of 90 observations…

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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A random sample of 90 observations produced a sample mean of 25.9 and a sample standard deviation of 2.7. Which one of the following best approximates a 90% confidence interval for u? O 25.9 ± 0.56 O (25.43 , 26.37) O (23.2, 28.6) O 25.9 ± 5.4 cannot be determined from the data