1. Compound Events 19.3

3. Inclusive Mutually exclusive
A simple event is an event that describes a single outcome. A compound event is an event made up of two or more simple events.

4. Mutually exclusive events are events that
cannot both occur in the same trial of an
experiment. Rolling a 1 and rolling a 2 on the
same roll of a number cube are mutually exclusive events.

5. Recall that the union symbol  means “or.”
Remember!
add

6. A group of students is donating blood during a
blood drive. A student has a probability of having
type O blood and a probability of having type A blood.
Why are the events “type O” and “type A”
blood are mutually exclusive?
B) What is the probability that a student has
type O or type A blood?
P(type O  type A) = P(type O) + P(type A)

7. You randomly draw one card from a standard deck
You randomly draw one card from a standard deck. What is the probability of picking a queen or an ace?
2/13

8. Inclusive events are events that have one or more
outcomes in common. When you roll a number cube, the
outcomes “rolling an even number” and “rolling a prime number”
are not mutually exclusive. The number 2 is both prime and even,
so the events are inclusive.

9. Recall that the intersection symbol  means “and.”
Remember!

10. Find the probability on a number
cube of rolling a 4 or an even number
P(4 or even) = P(4) + P(even) – P(4 and even)

11. You’re Up!
Find the probability on a number
cube of rolling anOdd number or a
number greater than 2
P(odd or >2) = P(odd) + P(>2) – P(odd and >2)

12. A card is drawn from a deck of 52.
Find the probability of drawing a king
or a heart.
P(king or heart) = P(king) + P(heart) – P(king and heart)

13. Go for it!
A card is drawn from a deck of 52. Find the probability of each.
drawing a red card or a face card
P(red or face) = P(red) + P(face) – P(red and face)

14. Of 1560 students surveyed, 840 were seniors and
630 read a daily paper. The rest of the students
were juniors. Only 215 of the paper readers were
juniors. What is the probability that a student
was a senior or read a daily paper?

15. In your textbook: Page 214 #’s 2-10 and page 215 #’s 12-18`
In your textbook: Page 214 #’s 2-10 and page 215 #’s 12-18