What is the mean time before failure of types of pacemakers

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Reference no: EM131866104

A medical equipment manufacturer subjected 100 pacemakers to 5000 hours of testing (all running simultaneously).

Four of them failed after: 1,140 hrs 2,337 hrs 3,699 hrs and 4,254 hrs of operation respectively

What is the mean time before failure (MTBF) of these types of pacemakers (calculate to rounded hours).

Reference no: EM131866104

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