c) For the normal distribution of burning times of electric light bulbs, with a mean equalto 1200 hours and a standard deviation equal to 120 hours, what burning time isidentified with the (a) upper 50 percent? (b) lower 75 percent? (c) lower 1 percent? (d)middle 90 percent?

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Answered: c) For the normal distribution of…

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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c) For the normal distribution of burning times of electric light bulbs, with a mean equal to 1200 hours and a standard deviation equal to 120 hours, what burning time is identified with the (a) upper 50 percent? (b) lower 75 percent? (c) lower 1 percent? (d) middle 90 percent?