Back to 3.4 Contingency Tables and Probability Trees

3.4 Exercise 1

Avg difficulty 2.5

Calculate the following probabilities using the table.

  1. Find P(Driver is a cell phone user).
  2. Find P(Driver had no violation in the last year).
  3. Find P(Driver had no violation in the last year ∩\cap was a cell phone user).
  4. Find P(Driver is a cell phone user ∪\cup driver had no violation in the last year).
  5. Find P(Driver is a cell phone user |\left|\right. driver had a violation in the last year).
  6. Find P(Driver had no violation last year |\left|\right. driver was not a cell phone user)

OpenStax Introductory Business Statistics 2e, 3.4 Contingency Tables and Probability Trees, exercise 1

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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.