a) P(x<3) = F(3)
= 1-e^((-1/6)(3))
=0.3934693403
b) E(X) = 6
The life of automobile voltage regulators has an exponential distribution with a mean life of six years. You purchase an automobile that is six years old, with a working voltage regulator and plan to own it for three years.
a)What is the probability that the voltage regulator fails during your ownership?
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