Concept explainers
YOUR TURN Repeat Example 2 for a flashlight battery with a useful life given by the probability density function
EXAMPLE 2 Flashlight Battery
Suppose the useful life (in hours) of a flashlight battery is the random variable T, with probability density function given by the exponential distribution
(a) Find the probability that a particular battery, selected at random, has a useful life of less than 100 hours.
(b) Find the expected value and standard deviation of the distribution.
(c) What is the probability that a battery will last longer than 40 hours?
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Calculus For The Life Sciences
- Calculus For The Life SciencesCalculusISBN:9780321964038Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.Publisher:Pearson Addison Wesley,Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage