PROBABILITY OF
COMPOUND EVENTS
Homework
on back table.
Due
Thursday!!!
Tuesday, April 18th
WARM-UP (journal)
Use your resources to define TREE DIAGRAM. How might we
use a TREE DIAGRAM with probability?
How many drink combinations are there
at SONIC?
https://www.youtube.com/watch?v=F1f1TKyndco
Drink
Sprite
Root Beer
Dr. Pepper
Flavor
Cherry
Blue Raspberry
Green Apple
Strawberry
Is there an easier way to find how many total
outcomes there will be rather than making a
tree diagram?
Drink
Sprite
Root Beer
Dr. Pepper
Flavor
Cherry
Blue Raspberry
Green Apple
Strawberry
Wednesday, April 19th
Please Pass
Back Papers
• Look over your test ~ incorrect answers are marked on scantron
portion.
• Start your corrections in SOLO
• Go to my moodle page ~ Unit 13 ~ Unit 13 Scantron ~ Enter your
ORIGINAL answers.
• We will go over the most missed problems.
Homework
is due
tomorrow!
WORK QUICKLY, QUIETLY &
EFFICIENTLY
Retake Schedule…
Corrections due before reteach session!!!
RETEACH
Wednesday after school
Thursday before school
RETEST
Thursday at lunch
Thursday after school
Friday at lunch
QUIZ TIME!!!
Go To:
Moodle
Unit 14
Unit 13/14 Probability
Quiz
PROBABILITY OF
COMPOUND EVENTS
Thursday, April 20th
WARM-UP
•
Turn in your homework half-sheet
•
Grab a notes page off the back table
•
If not complete, sign the board and go to hallway to WORK
on your homework assignment.
RETEST
Thursday at lunch
Thursday after school
Friday at lunch
LET’S BREAK THIS DOWN…
WHAT IS THE PROBABILITY OF EACH INDIVIDUAL EVENT?
p(heads, rolling a 3)
p(heads)
p(rolling a 3)
p(tails)
p(rolling an even
number)
p(heads)
p(rolling a prime
number)
1/12
p(tails, rolling an even
number)
3/12 = 1/4
p(heads, rolling a prime
number)
3/12 = 1/4
1/4
1/18
1/3
PROBABILITY OF
COMPOUND EVENTS
Friday, April 21st
WARM-UP
Finish the last 3 problems from your notes page from
yesterday.
Be prepared to SHARE 
GET A
NOTES
PAGE
FROM THE
BACK
TABLE!
1/4
1/18
1/3
Does
your
paper say
“OR”??
WHAT IS THE PROBABILITY OF ROLLING…
A 5 OR 6 ON A NUMBER CUBE?
1
2
3
A 5 AND 6 ON A NUMBER CUBE?
4
5
6
So when do we ADD probabilities, and
when do we MULTIPLY?
OR
AND
•
1 Event
• More than 1 event
•
ADD
• MULTIPLY
Example: What is the probability
of spinning and landing on a
yellow OR green space?
http://www.shmoop.com/basicstatistics-probability/and-orprobability.html
Example: What is the probability
of spinning and landing on
yellow, then spinning a second
time AND landing on a green?
https://www.youtube.com/watch?v=5CQw
8KsfipA
COMPOUND PROBABILITY WORKSHEET
COMPOUND PROBABILITY WORKSHEET
COMPOUND PROBABILITY WORKSHEET
COMPOUND PROBABILITY WORKSHEET
COMPOUND PROBABILITY WORKSHEET