Unit 13
Introduction to Probability
WARM-UP (in your math journal)
• Use your resources to define probability.
Brainstorm…
• Where might probability come up in everyday life?
• Grab a sheet from the back table.
WATCH THIS!
What is the probability of landing on RED?
What is the probability of landing on RED?
What is the probability of landing on RED?
PROBABILITY FORMULA
# of desired outcomes
# of total possible outcomes
1
or 50%
2
1
or 25%
4
3 or 30%
10
2 videos in one day!!??
Get ready to take notes!
Problem 1:
Practice!!!
What is the probability of flipping a coin and it landing on heads?
Problem 2:
What is the probability of spinning a “C”?
Problem 3:
What is the probability of rolling a 5 on a number cube, to the nearest percent?
Problem 4:
I have a bag with 3 green marbles, 3 red marbles, and 6 blue marbles.
What is the probability of pulling a red marble?
Thursday, April 6th
Retake Opportunity
1. Correct Test
2. Reteach Sessions:
Friday @ lunch
Monday morning
3. Retake Sessions:
Monday @ lunch
Monday after
school
Tuesday morning
Please pass
back papers!
WARM-UP
1. Look over your Unit 12 Summative, SOLO
TIME.
2. We will go over #4,6 & 7
KAHOOT TIME!!!
CLASS CODE
Friday, April 7th
THE PRODIGY GAME
CHALLENGE…
If you get to Level 100,
by May 5th, you will be
eligible for our…
PRODIGY
PIZZA
PARTY
Prepare
1. Turn in your half sheet from yesterday.
2. Grab a lab sheet from the back table.
Warm-Up
3. In your journal, define:
Experimental Probability
and
Theoretical Probability
https://www.youtube.com/watch?v=y
xYReJ1yjuE
Monday, April 10th
Prepare
• Pick a seat,
choose your
partners wisely or
you will be moved.
Complementary Events
WARM-UP (in your math journal)
Complement Events -
An event and it’s complement include all possible
outcomes! (think opposites)
p(heads)
p(not heads)
What is the complement event of….
1. Winning your soccer game?
2. Spinning a number less than 10 on a wheel?
3. Rolling a prime number on a 6-sided number cube?
USING YOUR JAR…
1. Calculate p(yellow)
2. Calculate p(green)
3. Calculate p(green or blue)
USING YOUR JAR…
4. Calculate p(not yellow)
5. Calculate p(not green)
6. Calculate p(not green or blue)
So what does that mean about complement
events?
1. Calculate p(yellow)
4. Calculate p(not yellow)
2. Calculate p(green)
5. Calculate p(not green)
3. Calculate p(green
or blue)
6. Calculate p(not green
or blue)
So what does that mean about complement
events?
Write an equation solving for p(complement
event) using p(event) and 1!
The probability of pulling a pink marble from the bag is 4/15.
What is the probability of not pulling a pink marble in percent
form?
Practice Questions…
Practice Questions…
2. What is the probability Lucero will randomly select an even number?
Practice Questions…
1. What is the probability of
spinning a number that is odd?
2. What is the probability of
spinning a number that is not
odd?
Practice Questions…
Clean up and make sure you have…
6 yellow blocks
5 green blocks
4 blue blocks
1 dry erase marker
1 paper towel
Dry erase board underneath