Short Answer
The lifetime of a light bulb is exponentially distributed with = 0.001.
a. What are the mean and standard deviation of the light bulb's lifetime?
b. Find the probability that a light bulb will last between 110 and 150 hours.
c. Find the probability that a light bulb will last for more than 125 hours.
Correct Answer:
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a. 1000.
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Correct Answer:
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b...
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