29. The life time of a printer head is assumed to follow normaldistribution with mean 8 million characters and S.D 0.4million characters.Then obtain the probability for:(i) printer head will fail before printing 7.2 million charactersand (ii) it will survive beyond 8.4 million characters.

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Answered: - 29. The life time of a printer head…

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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The Weibull distribution is widely used in statistical problems relating to aging of solid insulating materials subjected to aging and stress. Use this distribution as a model for time (in hours) to failure of solid insulating specimens subjected to AC voltage. The values of the parameters depend on the voltage and temperature; suppose a = 2.4 and ß = 220. (a) What is the probability that a specimen's lifetime is at most 250? Less than 250? More than 300? (Round your answers to five decimal places.) at most 250 less than 250 more than 300 0.74310 0.74310 0.12183 (b) What is the probability that a specimen's lifetime is between 100 and 250? (Round your answer to four decimal places.) 6032 (c) What value (in hr) is such that exactly 50% of all specimens have lifetimes exceeding that value? (Round your answer to three decimal places.) hr
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- 29. The life time of a printer head is assumed to follow normal distribution with mean 8 million characters and S.D 0.4 million characters. Then obtain the probability for: (i) printer head will fail before printing 7.2 million characters and (ii) it will survive beyond 8.4 million characters,