Transcript Chapter 9 Lesson 2

Do Now
1. Read through the lab on page 374 and
answer question #1 individually.
2. With your partner from yesterday
complete the lab on page 374. The
labeled tiles are on the front desk.
Chapter 9
Lesson 2
Tree Diagrams
Objective: Use tree diagrams to
count outcomes and find
probabilities
Lab
Number in your notebooks 1-30.
1. Record for each toss whether you get an even or an odd.
2. Determine how many odd tosses you had and then
determine how many times you tosses an even.
3. What were your results?
Fair Game
A game in which players of equal skill have
an equal chance of winning.
Tree Diagram
Is used to show all the possible outcomes or
sample space in an experiment.
Sample space
The set of all possible outcomes
A certain type of scooter comes in silver, red or purple with
wheel sizes of 125 mm or 180 mm. Find the total number
of color-wheel size combinations
Scooter
Color
Wheel
Size
Sample space
Silver, 125 mm
125 mm
Silver
Red
Purple
Silver, 180 mm
180 mm
125 mm
Red, 125 mm
180 mm
Red, 180 mm
125 mm
Purple, 125 mm
180 mm
Purple, 180 mm
COINS A game involves flipping two pennies. Draw a
tree diagram to show the sample space of the results
in terms of heads and tails. Then determine the
probability of flipping one head and one tail.
Answer:
ICE CREAM An ice cream sundae at the Ice Cream
Shoppe is made from one flavor of ice cream and one
topping. For ice cream flavors, you can choose from
chocolate, vanilla, and strawberry. For toppings, you
can have hot fudge, butterscotch, or marshmallow.
Find the number of different sundaes that are
possible.
Make a tree diagram to show the sample space.
Answer: There are nine different sundaes possible.
CARS A new car can be ordered with exterior color
choices of black, blue, red, and white, and interior
color choices of tan, gray, and blue. Find the number
of different cars that are possible.
Answer: 12
ICE CREAM An ice cream sundae at the Ice Cream
Shoppe is made from one flavor of ice cream and one
topping. For ice cream flavors, you can choose from
chocolate, vanilla, and strawberry. For toppings, you
can have hot fudge, butterscotch, or marshmallow. If
you are given a sundae at random from the Ice Cream
Shoppe, what is the probability that it has vanilla ice
cream?
Make a tree diagram to show the sample space. Then,
find the probability that the sundae has vanilla ice cream.
The sample space contains 9 possible outcomes. There are
three outcomes having vanilla ice cream.
Answer: So, the probability that a sundae chosen at
random has vanilla ice cream is