Pr(x>9)=.223
Pr(fails)=.5-.223
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?
2 answers
So the number of fails is 4.777? How id you get .5?
1 answer