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Name _______________________________________ Date __________________ Class __________________
Probability Review
UNIT
4
Unit Test: A
1. Kathleen rolled a number cube that has
sides labeled 1 to 6. What is the
probability that she rolled a 2 or a 4?
A
1
6
B
1
3
C
1
2
D
3
4
7. A classroom has 7 blue chairs, 5 green
chairs, 18 red chairs and 9 yellow chairs.
If a chair is selected at random, which
color is most likely to be chosen?
1
4
C
1
2
B
1
3
D
2
3
1
8
B
3
8
C
2
3
D
7
8
C 15
B 10
D 20
C 50
B 15
D 100
C 34
B 12
D 81
C
1
2
1
4
D
3
4
A 10
C 30
B 20
D 40
A
1
6
C
1
2
B
2
5
D
3
4
11. Melissa rolls two number cubes, each
with sides that are labeled 1 to 6. What is
the probability that both number cubes
show a 1?
6. Aurelio can choose between 3 pairs of
pants and 4 shirts. How many different
outcomes are in the sample space?
A 7
A 0
10. Jackson flipped a coin ten times. He
flipped heads 4 times and tails 6 times.
What is the experimental probability that
Jackson will flip heads on his next flip?
5. Gene made a two-digit code. The first
digit is odd. How many possible codes
can he choose from?
A 5
D yellow
9. The experimental probability that Daria
3
will win a game is . If she plays the
8
game 80 times, how many times can she
expect to win?
4. The probability that John receives junk
mail is 11 percent. If he receives
94 pieces of mail in a week, about how
many of them can he expect to be junk
mail?
A 5
B green
B
3. Kendra flips a coin 3 times. What is the
probability that she flips tails all 3 times?
A
C red
8. Gisele spins a spinner that has equally
sized yellow, green, blue and red
sections. What is the probability that
Gisele spins orange?
2. A bag contains 10 red marbles, 15 green
marbles and 15 blue marbles. If Dashawn
draws a marble from the bag, what is the
probability that it is a red marble?
A
A blue
A
1
6
C
1
24
B
1
12
D
1
36
Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
134
Name _______________________________________ Date __________________ Class __________________
UNIT
4
Probability
12. A sandwich shop offers 3 types of bread
and 4 types of meat. How many different
sandwiches consisting of 1 type of bread
and 1 type of meat are possible?
16. Maria randomly selects a number from
the list of numbers below.
56, 90, 88, 76, 12
What is the probability that she selects
an even number?
_______________________________________
________________________________________
13. The probability that Doreen wins a game
1
of chance is . Doreen plays the game
3
300 times, how many times can she
expect to win the game?
17.
_______________________________________
14.
Tyler’s Survey Results
Eye Color
Hair
Color
Brown
Blue
Brown
9
5
Blonde
12
14
Kelly’s Experimental Outcomes
Trial
Outcome
1
3, H
2
3, T
3
4, T
4
2, H
5
5, T
Kelly conducted an experiment. In each
trial she flipped a coin and rolled a number
cube that has sides labeled 1 to 6.
The results are shown above. What is the
experimental probability that her next flip
will be tails?
Tyler recorded the hair color and eye
color of students walking in the hallway
outside her homeroom. What is the
experimental probability that the next
student she sees will have blue eyes?
________________________________________
18. Colleen wrote each of the letters A
through Z on a separate piece of paper
and put them in a hat. If she randomly
selects a piece of paper from the hat,
what is the probability that the letter on
the piece of paper will be a vowel
(A, E, I, O or U)?
_______________________________________
15. Brianna rolls a number cube that has
sides labeled 1 to 6 and flips a coin.
Write the list of possible outcomes.
_______________________________________
_______________________________________
________________________________________
_______________________________________
19. Divya planted a garden with equal
numbers of roses, daffodils, and tulips. If
she randomly selects a flower, what is
the probability that it is a lily?
_______________________________________
_______________________________________
________________________________________
Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
135
UNIT 4 Probability
Unit 4 Test: A
1. B
2. A
3. A
4. B
5. C
6. B
7. C
8. A
9. C
10. B
11. D
12. 12 sandwiches
13. 100
14.
19
40
15. (1, H), (1, T), (2, H), (2, T), (3, H), (3, T),
(4, H), (4, T), (5, H), (5, T), (6, H), (6, T)
16. 1 or 100%
3
5
5
18.
26
17.
19. 0