Suppose that a machine has a certain

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
Problem 27T
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Suppose that a machine has a certain
type of part whose time, in year, to
failure is given by T. The random
variable T is modeled nicely by the
exponential distribution with mean
time to failure B= 9. If 9 of these
components are installed in different
systems,, what is the probability that
at least 2 are still functioning at the
* end of 16 years?
0.405
0.465
0.53
0.597
Transcribed Image Text:Suppose that a machine has a certain type of part whose time, in year, to failure is given by T. The random variable T is modeled nicely by the exponential distribution with mean time to failure B= 9. If 9 of these components are installed in different systems,, what is the probability that at least 2 are still functioning at the * end of 16 years? 0.405 0.465 0.53 0.597
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