Download Chapter 10 (Unit 5) Study Guide

Name _______________________________________ Date __________________ Class __________________
Probability Study Guide
Choose the best answer.
1. Lucy places five cards that are
labeled 1 to 6 face down on the table
and mixes them up. What is the
likelihood that her friend Harry will
draw an even numbered card?
A impossible
B unlikely
C as likely as not
D certain
2. The results of a survey show that
baseball is the favorite sport for
18 out of 25 people. Which percent is
closest to the probability that a
person’s favorite sport will NOT
be baseball?
A 7%
B 28%
3. On the last math test in Decker’s
class, 21 out of 25 students scored
an 80 or higher. Which percent is
closest to the experimental
probability that a student selected at
random will score an 80 or higher on
the next test?
A 4%
B 84%
4. During his first 20 picks from a bag of
marbles, Kai chose 8 yellow marbles,
3 green marbles, and 9 blue marbles.
Each time he replaces the marble
before selecting another. Which
percent is closest to the experimental
probability that Kai will choose a
green marble on his next pick?
A 3%
C 45%
B 15%
D 85%
5. Jill rolls a number cube and spins a
spinner with two equal sectors. How
many outcomes are possible?
A 2
C 8
B 6
D 12
6. Jose’s sandwich shop offers a lunch
special on sandwiches on whole
grain, black, and rye breads. You can
also choose between chicken cutlet,
and tuna salad. How many different
sandwiches can you make for the
lunch special?
A 5
B 6
7. Two number cubes are rolled and the
results are added. What is the
probability that the sum is equal to 2?
A
1
36
B
1
18
8. Daniel made 6 out of 15 free throw
shots. About how many out of the
next 10 free throw shots would you
expect him to make?
A 2
C 4
B 3
D 5
9. Rolph spins a spinner that is split into
6 equal sectors. The sectors are
labeled 3, 1, 3, 2, 3, 1. What is the
probability that the spinner will land
on the number 1?
A
1
12
C
1
3
B
1
6
D
1
2
Holt McDougal Mathematics
Name _______________________________________ Date __________________ Class __________________
Probability
10. A bag contains 4 red marbles and
1 yellow marble. What is the
probability of drawing a red marble,
then replacing that marble, then
drawing a red marble again on the
second pick?
A
8
25
C
1
5
B
16
25
D
3
5
11. A bag contains 3 blue marbles and
2 green marbles. What is the
probability of drawing a blue marble
followed by a green marble, without
replacing the first marble before
drawing the second marble?
A
1
5
B
3
10
12. Lewis rolls a number cube and then
chooses a card from a set of cards
numbered 1 through 5. What is the
probability that he will roll an even
number and choose an even
numbered card?
A
1
5
B
3
5
Holt McDougal Mathematics