Question: 21
(Choose 1 answer)
Suppose that a system contains a certain type of component whose time in years to failure is given by T. The
random variable T is modeled nicely by the exponential distribution with mean time to failure is 5 years. What is
the probability that the given component is still functioning at the end of 8 years?
A. 0.1247
B. 0.2019
C. 0.6731
D. 0.9254
E. None of the other choices is correct
