A laser printer is able to operate 400 hours between two repairs,and the mean time to repair the printer is 4 hours.Compute and indicate the availability of the printer.
A)0.99
B)0.96
C)0.98
D)0.97

Question

Quizplus · Accepted Answer

Availability is calculated as MTBF / (MTBF + MTTR), where MTBF is Mean Time Between Failures and MTTR is Mean Time To Repair. Here, MTBF = 400 hours, and MTTR = 4 hours. So, availability = 400 / (400 + 4) = 400 / 404 ≈ 0.99.

A Laser Printer Is Able to Operate 400 Hours Between