MATH 1040 - Introduction to Statistics

Lesson 10.2 Mutually Exclusive Events

Reading

Reading sections are from the Introductory Statistics Textbook

• 3.1.2 Disjoint or mutually exclusive outcomes (pages 90-92)

Lesson

Two events are Mutually Exclusive if they cannot occur at the same time. When this happens,

\[P(A~AND~B) = 0\]

When this occurs, the equation for the “OR” probability is,

\[P(A~OR~B) = P(A) + P(B)\]