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Back to 4.6 Poisson Distribution

4.6 Exercise 9

Avg difficulty 2.5

Text message users receive or send an average of 41.5 text messages per day.

  1. How many text messages does a text message user receive or send per hour?
  2. What is the probability that a text message user receives or sends two messages per hour?
  3. What is the probability that a text message user receives or sends more than two messages per hour?

OpenStax Introductory Statistics 2e, 4.6 Poisson Distribution, exercise 9

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Adapted from Introductory Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Statistics 2e. Imported at revision 50ec917.