Question: A lightbulb is warranted to last for 5,000 hours. If the time to failure is exponentially distributed with a true mean of 4,800 hours, what

A lightbulb is warranted to last for 5,000 hours. If the time to failure is exponentially distributed with a true mean of 4,800 hours, what is the probability that it will last at least 5,000 hours?

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