If the probability that a fluorescent light has a useful life of at least 800 hours is

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If the probability that a fluorescent light has a useful life of at least 800 hours is 0.9, find the probabilities that among 20 such lights

(a) Exactly 18 will have a useful life of at least 800 hours;

(b) At least 15 will have a useful life of at least 800 hours;

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Fundamentals of Aerodynamics

ISBN: 978-0070016798

2nd Edition

Authors: J. Anderson

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Question Posted: Feb 03, 2011 05:32 AM

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If the probability that a fluorescent light has a useful life of at least 800 hours is

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n 20 and p 090 a PX 18 ...View the full answer

Fundamentals of Aerodynamics

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