4-57. The life in hours of a biomedical device under devel-opment in the laboratory is known to be approximately nor-mally distributed. A random sample of 15 devices is selectedand found to have an average life of 5625.1 hours and a sam-ple standard deviation of 226.1 hours.(a) Test the hypothesis that the true mean life of a biomedicaldevice is greater than 5500 using the P-value approach.(b) Construct a 95% lower confidence bound on the mean.(c) Use the confidence bound found in part (b) to test thehypothesis.

The sample size is 15, sample mean is 5625.1 and a sample standard deviation is 226.1.

Answered: 4-57. The life in hours of a biomedical…

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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