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Back to 4.4 Poisson Distribution

4.4 Exercise 11

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 Business Statistics 2e, 4.4 Poisson Distribution, exercise 11

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