What is the probability that there are exactly 5 sightings within 5 months? b. What is the mean time between two consecutive sightings? (years) c. What is the probability that the time until the first sighting is less than 9 months?

What is the probability that there are exactly 5 sightings within 5 months? b. What is the mean time between two consecutive sightings? (years) c. What is the probability that the time until the first sighting is less than 9 months?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

Question 5:
The number of stork sightings on a route in South Carolina year follows a Poisson distribution with a mean of 5.
a. What is the probability that there are exactly 5 sightings within 5 months?
b. What is the mean time between two consecutive sightings? (years)
c. What is the probability that the time until the first sighting is less than 9 months?

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