The lightbulbs in an industrial warehouse have been found to have a mean lifetime of 1030 hours, with a standard deviation of 90 hours. The warehouse manager has been approached by a representative of a company that makes a device intended to increase bulb life. Manager agrees to test the device by considering 40 bulbs equipped with the device and finds their mean life to be 1061.6 hours. Using level of significance of your choice can you conclude that the device was effective?

The lightbulbs in an industrial warehouse have been found to have a mean lifetime of 1030 hours, with a standard deviation of 90 hours. The warehouse manager has been approached by a representative of a company that makes a device intended to increase bulb life. Manager agrees to test the device by considering 40 bulbs equipped with the device and finds their mean life to be 1061.6 hours. Using level of significance of your choice can you conclude that the device was effective?

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Description: The lightbulbs in an industrial warehouse have been found to have a mean lifetime of 1030 hours, with astandard deviation of 90 hours. The warehouse manager has been approached by a representative of acompany that makes a device intended to increase

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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