Answer:
Step-by-step explanation:
Given that a certain type of device has an advertised failure rate of 0.01 per hour.
Since failure rate is constant we find that time required for one failure
=1(100) =100
In 100 hours 1 failure can be expected
a)Mean time to failure [tex]= 100 hours[/tex]
b) the probability that 300 hours will pass before a failure is​ observed
= first 5 hours not failed and next hour failed
= [tex](1-0.01)^5 (0.01)\\= 0.00951[/tex]
