Question

Ten high-technology batteries are tested for 200 hours each. One failed at 20 hours; all others completed the test. FR(%) is __________ and MTBF is __________.

A) 10%; 1/1820

B) 90%; 1/1820

C) 10%; 1820 hours

D) 10%; 1980 hours

E) cannot calculate from information provided

Answer

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