Let X be a random variable which represents the lifetime in years of a particular battery. We are given that X has an exponential distribution with rate λ = .15. (d) What is the probability that the battery fails between the fifth and sixth year? Show by hand and provide the appropriate R code. (e) What is the probability that the battery is still working after three years? Show by hand and provide the appropriate R code. (f) What is the probability that the battery is still working after five years, given that the battery is still working after two years?
Let X be a random variable which represents the lifetime in years of a particular battery. We are given that X has an exponential distribution with rate λ = .15. (d) What is the probability that the battery fails between the fifth and sixth year? Show by hand and provide the appropriate R code. (e) What is the probability that the battery is still working after three years? Show by hand and provide the appropriate R code. (f) What is the probability that the battery is still working after five years, given that the battery is still working after two years?
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.3: Binomial Probability
Problem 2E: If a binomial experiment has probability p success, then the probability of failure is...
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Let X be a random variable which represents the lifetime in years of a particular battery. We are given
that X has an exponential distribution with rate λ = .15.
(d) What is the probability that the battery fails between the fifth and sixth year? Show by hand
and provide the appropriate R code.
(e) What is the probability that the battery is still working after three years? Show by hand and
provide the appropriate R code.
(f) What is the probability that the battery is still working after five years, given that the battery is
still working after two years?
(g) You observe a battery who’s lifetime is in the 99th percentile. How long has this battery lasted?
Show by hand and provide the appropriate R code.
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