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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Consider Example 14.1 on LEDs. Do you think a normal distribution would generally be a viable model for such applications? Why or why not?
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Example 14.1
Light-emitting diodes (LEDs) are part of the move toward brighter and more efficient lights. Assume that a system consists of two different types of LEDs, one whose lifetime is believed to be about 12,000 hours with a standard deviation of 900 hours and to be (approximately) normally distributed, and for the other LED a normal distribution with a mean of 11,000 hours and a standard deviation of 800 hours is believed to provide a good fit. (The question of whether or not a normal distribution would seem to be a viable model for this application is addressed in Exercise 14.29.)

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