Show all work for all credit:>
probability1
NAME:_________________________
ROW:________________
25. There are 22 students in Tricia's class. Ms.
Watkins will select one student from the class
at random to participate in a field trip. What is
the probability that Tricia will be the student
chosen?
A.
B.
C.
D.
24. The planners at Jester Heights Middle
School are looking at the circle graph shown
above.
If a student is placed into a classroom at
random, what is the probability that the student
will get a classroom with a view of a
neighborhood or the courtyard?
A.
B.
C.
D.
11/20
15/25
9/20
9/25
1/22
1/20
1/11
1/10
26. Shannon has a spinner with the numbers 1–
10. In five spins, these numbers came up: 2, 7,
3, 8, and 3. What is the experimental
probability that she will spin a 3 on her next
spin?
A.
B.
C.
D.
1/2
2/5
1/5
1/10
27. A coin is tossed 40 times. The results are 30
heads and 10 tails. What is the experimental
probability of getting heads?
A.
B.
C.
D.
1/4
1/2
3/4
1
1
Show all work for all credit:>
28. In a factory, manufactured light bulbs are
tested and 3% are found to be defective. If there
are 1,500 light bulbs produced, how many are
likely to be defective?
A.
B.
C.
D.
3
15
45
450
30. If Vanessa spins the spinner shown above
one time, what is the probability that she will
not spin a vowel?
A.
B.
C.
D.
0
1/4
1/2
3/4
29. In a class of 28 children, 12 have blonde
hair and 10 have brown hair. What is the
probability of choosing a child without blonde
or brown hair?
A.
B.
C.
D.
3/14
4/7
9/14
11/14
31. Al rolls a number cube numbered 1 through
6. He rolled it 4 times and got a 2, 4, 2, and 3.
What is the experimental probability of rolling
a 2 in this experiment?
A.
B.
C.
D.
1/6
1/3
1/2
1
2
Show all work for all credit:>
Probability2
Name:____________________________
Row:_________________
32. A spinner is divided into 10 equal
sections numbered 1, 2, 3, 4, 5, 6, 7, 8, 9, and
10. What is the probability of getting a prime
number on one spin?
A.
B.
C.
D.
1/10
3/10
2/5
1/2
34. Beth picks one card randomly from these 9
cards.
What symbol should be on the ? card to make
the probability of choosing that card 1/9?
A.
B.
C.
D.
Symbol A
Symbol B
Symbol C
Symbol D
33. A bag has 6 red marbles and 4 blue marbles.
Bob is going to add some marbles to the bag to
make the probability of drawing a blue marble
1/2. How many blue marbles should he add to
the bag?
A.
B.
C.
D.
1
2
3
4
35. If you spin the spinner 100 times, about
how many times would you expect the spinner
to land on letter A?
A.
B.
C.
D.
4
20
25
40
36. A cellular telephone company reports that
there are only 4 defective phones manufactured
for every 200 that leave the factory. What is the
probability of purchasing a defective phone?
A.
B.
C.
D.
0.02
0.05
0.2
0.5
3
Show all work for all credit:>
37. Kelly has bowled 35 strikes in her last 150
frames of bowling. If she bowls 500 frames this
season, about how many strikes can she be
expected to make?
A.
B.
C.
D.
39. Samantha conducted a survey. She
interviewed a random sample of 28 students in
her school to see how much time they spent on
homework. She recorded her results in a data
table.
100
115
135
150
If there are 450 students in her school, how
many students would you expect to spend more
than 2 hours on homework?
A.
B.
C.
D.
38. Martin calculated the probability of pulling
different-colored balls out of a bag. He
organized his data in the table above.
He counted 4 green balls in the bag. How many
red balls can he expect to count?
A.
B.
C.
D.
112 students
96 students
241 students
210 students
40. Samantha took a survey of the students in
her class, to see how much time they spent
watching TV. Her results are shown in the
circle graph below.
1
2
6
12
If there are 650 students in her school, how
many students would you expect to spend more
than 4 hours watching TV on a school day?
A.
B.
C.
D.
65 students
84 students
221 students
280 students
4
Show all work for all credit:>
Probability3
NAME:_______________________________
Row:_______________
1. Andrea is going to choose 2 straws from a
container which contains 12 colored straws.
There are 6 yellow straws, 3 red straws, 2 green
straws, and 1 blue straw. When Andrea chooses
the first straw, she does not replace it before
choosing the second straw. What is the
probability that Andrea will choose 2 red
straws?
A.
B.
C.
D.
6/144
9/144
6/132
3/12
3. A drawer contains 1 pair of blue socks, 1 pair
of red socks, 1 pair of white socks, 1 pair of
brown socks, and 1 pair of black socks. Without
looking, you reach into the drawer and pull out
a pair of socks. It is the wrong color so you put
it back in and choose again without looking.
What is the probability that you will choose the
pair of blue socks twice?
A.
B.
C.
D.
2. In a game, each player has to roll a number
cube and spin a spinner. What is the probability
that a player will roll an odd number and spin a
vowel?
A.
B.
C.
D.
1/6
1/8
1/3
1/12
1/5
1/10
1/20
1/25
4. What is the probability of flipping a coin 3
times and getting heads each time?
A.
B.
C.
D.
1/2
1/4
1/6
1/8
5
Show all work for all credit:>
5. Juan spins each spinner above once.
What is the probability of Juan's spinning an A
and a 3?
A.
B.
C.
D.
1/12
1/6
1/4
1/3
7. Brooke spun this spinner once and rolled the
number cube numbered 1-6 once.
What is the probability that she spins a Q and
rolls a 5?
6. Phoebe can choose from 3 brownies, 2
cookies, and 5 chocolates for dessert. She can
also choose from coffee, milk, or water to drink
with her dessert.
What is the probability that Phoebe chooses a
cookie and milk for dessert?
A.
B.
C.
D.
A.
B.
C.
D.
1/4
1/6
1/10
1/24
1/15
1/8
1/5
1/3
8. Leonardo has a bag filled with stamps from
around the world. He has 3 from India, 2 from
Mexico, 2 from Morocco, 1 from Bali, and 3
from Canada. If he takes the stamp from Bali
out of the bag, what is the probability that the
next stamp he takes out will be from a country
beginning with the letter M?
A.
B.
C.
D.
2/11
4/11
2/5
1/2
6
Show all work for all credit:>
Probability4
Name:___________________
Row:___________
9. There are 4 cards labeled 1, 2, 3, and 4 in a
box. Two cards are drawn, one at a time, and
after both are drawn, they are put back into the
box. To win, you must choose the number 2
first and the number 3 last. What is the
probability of winning this game?
A.
B.
C.
D.
A.
B.
C.
D.
5/12
7/12
1/2
7/36
1/2
1/4
1/8
1/12
10. John will choose 2 marbles from a jar. He
will not replace the first one before choosing
the second. There are 7 red marbles, 5 white
marbles, 4 green marbles, 8 black marbles, and
12 blue marbles. What is the probability that he
will choose a green marble and then a blue
marble?
A.
B.
C.
D.
11. Charise played a game with two number
cubes. If she got a sum greater than 7, she got 1
point. What is the probability on one roll of 2
number cubes that she will get a sum greater
than 7?
12. A basketball player has a 40% success rate
on free throws. What is the probability that he
will miss 2 free throws in a row?
A.
B.
C.
D.
16%
24%
36%
80%
4/105
1/27
1/9
4/9
13. Jacquelyn is going to choose 2 letters of the
alphabet at random from a basket containing 26
pieces of paper, each with one of the letters
written on it. What is the probability that she
will choose a vowel both times if she replaces
the first letter before choosing the second one?
A.
B.
C.
D.
25/676
1/26
2/65
5/26
7
Show all work for all credit:>
14. A box contains 4 blue erasers and 2 green
erasers. An eraser is drawn at random and then
replaced. A second eraser is then drawn at
random. What is the probability that both
erasers are green?
A.
B.
C.
D.
1/4
4/36
6/36
5/6
15. A jar contains 45 jellybeans. There are 10
green ones, 12 white ones, 8 red ones, 6 black
ones, and 9 yellow ones. What is the probability
of not choosing a green or a black jellybean
when choosing one at random from the jar?
A.
B.
C.
D.
16/45
29/45
7/9
13/15
16. Dan has 15 pairs of socks in his drawer.
There are 7 white pairs, 3 black pairs, and 5
blue pairs. If he reaches in and chooses a pair of
socks without looking, what is the probability
that he will choose a blue pair?
A.
B.
C.
D.
1/5
1/3
7/15
2/3
8
Show all work for all credit:>
Probability5
Name:_______________________
Row:_________________
17. Douglas is choosing 2 cards from a deck of
52. If he replaces the first card before choosing
the second, what is the probability that he will
choose the 8 of hearts both times?
A.
B.
C.
D.
0
1 / 2,704
1 / 52
2 / 52
18. Charise played a game with three pennies.
If she gets all heads or all tails, she wins the
pennies. If not, her brother gets the coins. What
is the probability that Charise will win all the
coins?
A.
B.
C.
D.
1/4
2/3
3/4
1/3
19. Mario chooses a tile from a bag which
contains 5 white tiles, 3 red tiles, 4 purple tiles,
and 6 blue tiles. Which color is he most likely
to choose?
A.
B.
C.
D.
Blue
Purple
Red
White
20. Jamie was planning a magic trick. He took
index cards and wrote the following letters on
12 cards:
AAABBBCCCDDD
He wanted to show everyone that they would
not pull the letter P out of his pile of cards.
Which of the following, when added to his pile,
will create the least probability of choosing a P?
A.
B.
C.
D.
1 P card and 3 F cards
3 P cards and 3 F cards
1 P card, 3 E cards, and 3 F cards
3 P cards, 3 E cards, and 3 F cards
21. A bag contains 3 blue marbles, 2 green
marbles, 1 red marble, and 6 yellow marbles.
Chayton selects one marble at random.
What is the probability that it is not yellow?
A.
B.
C.
D.
1/6
1/4
1/2
3/4
9
Show all work for all credit:>
22. Phoebe can choose from 3 brownies, 2
cookies, and 5 chocolates for desert. If she
picks one desert at random, what is the
probability it is not a brownie?
A.
B.
C.
D.
7/10
2/3
1/3
3/10
23. A bag contains 1 green cube and 2 blue
cubes. For a game, 1 cube is selected, then
replaced, then another cube is drawn. Doug
wins the game if both cubes are the same
color. Gretchen wins the game if the two
cubes are different colors. Who is more
likely to win the game?
A.
B.
C.
D.
Doug
Gretchen
They are equally likely to win.
It is impossible to tell.
10