Question: What is the formula for the mean time between failures? a) Number of failures 4 Number of unit-hours of operating time b) Number of unit-hours

What is the formula for the mean time between failures?

a) Number of failures 4 Number of unit-hours of operating time

b) Number of unit-hours of operating time รท Number of failures

c) (Number of failures 4 Number of units tested) 3 100%

d) (Number of units tested 4 Number of failures) 3 100%

e) 1 4 FR(%)

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