(Choose1answer)
The time to failure (in hours) for a laser in a cytometry machine is modeled by an exponential distribution with 2. = 0.00004. Find the probability that the laser will last at least 20000 hours.
(Seepicture)
A. 0.45
None of the other choices is correct
C. 0.65
D. 0.74
E. 0.55
Exit 8
