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A nit is a measure of brightness (one nit is equal to one candela per square meter). The LCD screens from a manufacturer have brightness,
- A nit is a measure of brightness (one nit is equal to one candela per square meter). The LCD screens from a manufacturer have brightness, X, that follows a normal distribution with mean = 250 nits and standard deviation = 15 nits, i.e. X N (250, 15).
- (a)Find the probability that a randomly selected screen has brightness between 250 and 270 nits.
- (b)Suppose screens with brightness levels in the highest 25% are sold as "premium" panels. How many nits must a screen produce to be sold as premium?
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A First Course in Differential Equations with Modeling Applications
Authors: Dennis G. Zill
10th edition
978-1111827052
