AI Tutor
Back to 3.3 Two Basic Rules of Probability

3.3 Exercise 44

Avg difficulty 2.5

Y and Z are independent events.

  1. Rewrite the basic Addition Rule P(Y OR Z) = P(Y) + P(Z) - P(Y AND Z) using the information that Y and Z are independent events.
  2. Use the rewritten rule to find P(Z) if P(Y OR Z) = .71 and P(Y) = .42.

OpenStax Statistics, 3.3 Two Basic Rules of Probability, exercise 44

AI Tutor

Adapted from Statistics © 2022 Rice University. Licensed under CC BY 4.0. Source: Statistics. Imported at revision 7dea80a.