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An ABC Company manufactures gizmos for use on widgets
An ABC Company manufactures gizmos for use on widgets. The time to failure, in years, of these gizmos has the following:
Reliability function R(t) = 1(t+1)2R(t) = 1(t+1)2, t≥0t≥0
Is the failure rate DFR, CFR, or IFR?
Expert Solution
For one year, put 1 in place of t in the formula then solve;
R=1÷(t+1)2R=1÷(t+1)2
=1÷(1+1)2=1÷(1+1)2
=1÷22=1÷22
=1÷4=1÷4
=0.25=0.25
The reliability is 0.25.
Therefore the failure rate is a DFR because there is a decrease in probability over time.
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