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Assume a device manufacturer tests 100 devices. The first device fails at 100 hours. The last device fails at 200 hours. What is the device MTBF:a. 10,000 Hoursb. 15,000 hours c. 20,000 hours d. 100 hours

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Answer:

a. 10,000 Hours

Step-by-step explanation:

MTBF (Mean Time Between Failures) can be calculated using the formula:

[tex]MTBF={(L-F)}*{n}[/tex] where

  • L is the time at which last device fails (200 hours)
  • F is the time at which first device fails (100 hours)
  • n is the number of devices tested (100)

[tex]{MTBF=(200-100)}*{100}=10000[/tex]

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