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7.8 The Addition Rule for Probability

When either of two events will do: mutually exclusive cases add directly, while overlapping ones need the shared outcomes subtracted once.

Contemporary Mathematics, 7.8 The Addition Rule for Probability

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2 exercises

7.8 Exercise 1

Decide whether the following events are mutually exclusive. If they are not mutually exclusive, identify an outcome that would result in both events occurring.

  1. You are about to roll a standard 6-sided die. EE is the event “the die shows an even number” and FF is the event “the die shows an odd number.”
  2. You are about to roll a standard 6-sided die. EE is the event “the die shows an even number” and SS…
2.5

7.8 Exercise 5

Suppose we have events EE, FF, and GG, associated with these probabilities:

Compute the following:

  1. P(E⁢or⁢F)P \left(E \text{or} F\right)
  2. P(E⁢or⁢G)P \left(E \text{or} G\right)
  3. P(F⁢or⁢G)P \left(F \text{or} G\right)
2.5
7.7 What Are the Odds?7.9 Conditional Probability and the Multiplication Rule

Adapted from Contemporary Mathematics © 2023 Rice University. Licensed under CC BY 4.0. Source: Contemporary Mathematics. Imported at revision fa7c1a1.

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