The Time (In Years) Until the First Critical-Part Failure for a Certain

Multiple Choice

The time (in years) until the first critical-part failure for a certain car is exponentially distributed with a mean of 3.4 years. Find the probability that the time until the first critical-part failure is 5 years or more.

A) 0.229790
B) 0.506617
C) 0.770210
D) 0.493383