Mutually Exclusive Events and Addition Rule

If a spinner is numbered 1 – 8, are the events of spinning an odd number and spinning an "8" mutually exclusive?

Which of the following shows how to determine P(football or basketball)?

Hint: Addition Rule

Two events are (a)   if they cannot happen at the same time

To find the probability of Event A OR Event B happening, what rule do we use?

Event A has a 1/2 chance of occurring, Event B has a 1/2 Chance of occurring and they have a 1/4 chance of happening at the same time. What is the probability of Event A or Event B happening?

If event A has a 1/4 chance of happening, event B has a 2/4 chance of happening, and there is a 1/3 chance that they Both happen. What is the probability of Event A or Event B happening?

If you are picking a card randomly from a deck of cards, the events of picking an ace and picking a 3 are mutually exclusive.

When rolling a single die, the events of rolling an even number and rolling a 5 are mutually exclusive.

If P(A) = 0.25, P(B) = 0.50, and P(A or B) = 0.65, are the events A and B mutually exclusive?