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LetX= the time (in minutes) that a postal clerk spends with her customers. This time is known to ...

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LetX= the time (in minutes) that a postal clerk spends with her customers. This time is known to ...

LetX = the time (in minutes) that a postal clerk spends with her customers. This time is known to have an exponential distribution with an average of 4 minutes. What is the probability that the clerk spends 4 to 5 minutes with a randomly selected customer?

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0.7135

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0.6321

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0.3456

▸

0.0814

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Introductory Statistics: A Problem-Solving Approach

Edition: 3^rd

Author: Kokoska

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Helped a lot

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this is exactly what I needed

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