Multiple Choice
In a manufacturing process involving several machines, the average down time t (in hours) for a machine that needs repair has the probability density function . Find the probability that a failed machine's down time is 4 hours or more. Round your answer to three decimal places.
A) 0.865
B) 0.998
C) 0.145
D) 0.135
E) 0.002
Correct Answer:

Verified
Correct Answer:
Verified
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