4. A sample of 100 fluorescent light tubes from the Short Life Tube Company has amean life of 20.5 hours and a standard deviation of 1.6 hours. Test:(a) At the 1% level whether the sample comes from a population with mean 23.2hours.(b) At the 5% level whether it comes from a population with mean 20.8 hours.(c) At the 5% level whether it comes from a population with mean less than 20.8hours

To test these hypotheses, we can use the z-test since we know the population standard deviation and…

Answered: (a) At the 1% level whether the sample…

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) At the 1% level whether the sample comes from a population with mean 23.2 hours. (b) At the 5% level whether it comes from a population with mean 20.8 hours. (c) At the 5% level whether it comes from a population with mean less than 20.8 hours