Question

The number of days travelers purchase their airline tickets ahead of their flights can be modeled...

The number of days travelers purchase their airline tickets ahead of their flights can be modeled by an exponential distribution with the average amount of time equal to 35 days.

Find the probability that a traveler will purchase a ticket fewer than ten days in advance.

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Answer #1

solution

λ =35.  

P(X ≤ 10) =1 - e-10/35

= 1 -0.7515

=0.2485

probability = 0.2485

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