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Back to 5.3 The Exponential Distribution (Optional)

5.3 Exercise 5

Avg difficulty 2.5

The number of days ahead travelers purchase their airline tickets can be modeled by an exponential distribution with the average amount of time equal to 15 days. Find the probability that a traveler will purchase a ticket fewer than 10 days in advance. How many days do half of all travelers wait?

OpenStax Statistics, 5.3 The Exponential Distribution (Optional), exercise 5

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