Disjoint Events

Are the events disjoint or not disjoint?

• Disjoint

• Not disjoint

These events are disjoint. Find the missing probability.

• 9/50

• 9/10

• 6/15

• 9/15

These events are disjoint. Find the missing probability.

How do you know if events are disjoint?

• If they have nothing in common

• If P(A)+P(B) = P(A)+P(B)-P(AnB)

• If one event's probability changes the probability of another.

Two events are mutually exclusive if they have ​ (a)   outcome(s) in common. This means that 𝑃(𝐴 ∩ 𝐵) =

​ (b)   .

• No

• 0

• One

• Many

• 1

• Between 0 & 1

Mathematical Equivalence

ON

Are the events disjoint or not disjoint?

• Disjoint

• Not disjoint

Are the events disjoint or not disjoint?

• Disjoint

• Not disjoint

These events are not disjoint. Find the missing probability.

Are these events disjoint or not disjoint?

• Disjoint

• Not disjoint