Chapter 9 Probability Worksheet Page 10
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48You can use a table or a tree diagram to find the probability of an event.
Find Probability
3
GAMES
Refer to the Mini Lab at the start of this lesson. Find the
sample space. Then find the probability that player 2 wins.
Fair Game
Fair Game A fair game is
There are 4 equally
one in which each player
likely outcomes with 2
has an equal chance of
favoring each player.
winning. This game is a
fair game.
So, the probability that
_
2
player 2 wins is
,
4
_
1
or
.
2
GAMES
Marcos tosses three coins. If all three coins show up heads,
c.
Marcos wins. Otherwise, Kara wins. Find the sample space. Then
find the probability that Marcos wins.
Examples 1, 2
For each situation, find the sample space using a table or tree diagram.
(pp. 465–466)
A number cube is rolled twice.
1.
A pair of brown or black sandals are available in sizes 7, 8, or 9.
2.
Example 2
MULTIPLE CHOICE
Sandwiches can be made with ham or turkey
3.
(p. 466)
on rye, white, or sourdough breads. Which list shows all the possible
outcomes?
A
C
Outcomes
Outcomes
ham
rye
ham
rye
turkey
white
turkey
rye
ham
sourdough
ham
white
ham
rye
turkey
white
turkey
white
ham
sourdough
turkey
sourdough
turkey
sourdough
B
D
Outcomes
Outcomes
ham
rye
ham
rye
turkey
white
turkey
white
turkey
sourdough
ham
sourdough
Example 3
GAMES
Brianna spins a spinner with four sections of equal size twice,
4.
(p. 467)
labeled A, B, C, and D. If letter A is spun at least once, Brianna wins.
Otherwise, Odell wins. Find the probability that Odell wins.
467
Lesson 9-2 Sample Spaces
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