The time in seconds that it takes a production worker to inspect an item has an exponential distribution with mean 15 seconds. What proportion of inspection times is less than 10 seconds?

Question

The time in seconds that it takes a production worker to inspect an item has an exponential distribution with mean 15 seconds. What proportion of inspection times is less than 10 seconds?
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Quizplus · Accepted Answer

The Answer of The time in seconds that it takes a production worker to inspect an item has an exponential distribution with mean 15 seconds. What proportion of inspection times is less than 10 seconds?
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The Time in Seconds That It Takes a Production Worker