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Math 7 :: Probability Review

Total questions: 64

Worksheet time: 12hrs 32mins

Name
Class
Date
1.
Probability is ...
a)
the chance that some event will occur.
b)
a game that involves coins.
c)
a guarantee.
2.
Probability can be written as ...
a)
a fraction
b)
a decimal
c)
a percent
d)
all of the above
3.
A likely chance event is closer to what number?
a)
0
b)
1
c)
.5
d)
100
4.
An unlikely chance event is closer to what number?
a)
0
b)
1
c)
2
d)
3
5.
What is the probability of spinning the spinner and having it land on RED?
a)
33%
b)
50%
c)
12%
6.
What is the probability of flipping a coin and getting heads?
a)
1/2
b)
1/3
c)
1/4
d)
Never, Tails never fails.
7.
A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?
a)
5/11
b)
5/6
c)
1/3
d)
5
8.
The probability of it raining today is 30%.  What is the probability that it will NOT rain?
a)
30%
b)
70%
c)
100%
d)
0%
9.

What is the probability of spinning an even number?

a)

16 2/3%

b)

33 1/3%

c)

50%

d)

75%

10.
Is the spinner more likely or less likely to land on green than yellow?
a)
more likely
b)
less likely
11.
What is the probability of drawing a red card from a standard deck of cards?
a)
1/52
b)
13/52
c)
1/2
d)
4/52
12.
The probability of Asher's soccer team winning its next game is 7/10.  What is the probability of not winning their next game?
a)
unlikely
b)
3/10
c)
1/2
d)
impossible
13.
What is the probability of pulling a red marble out of a jar of marbles that have 10 green marbles, 7 red marbles and 3 blue marbles?
a)
1/7
b)
7/20
c)
7/10
d)
3/10
14.
If you were to roll the die one time what is the probability of it landing on a 2?
a)
2 out of 6
b)
2 out of 2
c)
1 out of 6
d)
1 out of 1
15.
What is the probability of selecting a cherry piece of candy?
a)
3 out of 10
b)
3 out of 3
c)
3 out of 9
d)
4 out of 10
16.
What is the probability of getting an odd number when rolling a single 6 sided die?
a)
1/6
b)
2/6
c)
3/5
d)
3/6
17.
What is the probability of the spinner landing on red?
a)
5/12
b)
1/5
c)
5/5
d)
3/5
18.

What is the probability that you choose blue? *simplify

5 green

6 yellow

8 blue

7 brown

a)

8/26

b)

4/13

c)

8/25

d)

1/3

19.

What is the probability of spinning a 2 on the spinner?

a)

1/2

b)

1/3

c)

1/8

d)

1/4

20.

What is the probability the spinner stops on yellow?

a)

.05

b)

50%

c)

25%

d)

3/8

21.

What is the probability of the spin stopping on yellow?

a)

1/4

b)

.25

c)

50%

d)

75%

22.

What is the probability of spinning an even number?

a)

16 2/3%

b)

33 1/3%

c)

50%

d)

75%

23.
Probability is between which two numbers?
a)
0-100
b)
5-10
c)
0-1
24.

Find the probability of rolling a 7 on a single die.

a)

1/6

b)

7/6

c)

0

d)

7/7

25.
The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a letter other than “A”? 
a)
2/7
b)
5/49
c)
5/7
d)
10/49
26.

A box has 3 limes, 5 grapes, and 2 oranges.


P (NOT lime)

a)

3/10

b)

30%

c)

7/10

d)

Answer Not Here

27.

Marvin has a standard deck of cards.


P (Ace or 5)

a)

1/13

b)

2/13

c)

1/26

d)

8/50

28.

Amelia receives a treat bag. The treat bag contains 10 gumballs, 5 pixie sticks, 2 bracelets, and 3 chocolates. If Amelia selects 3 items from her treat bag without looking and gives them to her sister, which could NOT represent a possible outcome for the items Amelia selects?

a)

gumball, gumball, gumball

b)

pixie stick, gumball, chocolate

c)

bracelet, bracelet, bracelet

d)

gumball, gumball, pixie stick

29.

The list shows all possible outcomes for which experiment?


S = { (heads, heads), (heads, tails),

(tails, tails), (tails, heads) }

a)

Flipping a coin one time

b)

Flipping a coin two times

c)

Flipping a coin three times

d)

Flipping a coin four times

30.
What is the probability of spinning red?
a)
0
b)
1/2
c)
3/4
d)
1
31.
A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?
a)
5/6
b)
1/2
c)
1/3
d)
1/6
32.
What is the probability of choosing a vowel from the alphabet?
a)
21/26
b)
5/26
c)
1/21
d)
7/21
33.
Experimental Probability is:
a)
What Will happen 
b)
What actually happens
c)
What should happen
d)
What I think Happens
34.
Theoretical Probability is?
a)
What Should happen
b)
What does happen
c)
What Will Happen
d)
What I want to Happen
35.
What is the probability of rolling 15 with a pair of dice?
a)
impossible
b)
unlikely
c)
equally likely
d)
likely
36.
The probability of it raining today is 30%.  What is the probability that it will NOT rain?
a)
30%
b)
70%
c)
100%
d)
0%
37.

A bag contains 5 red cards, 4 yellow cards, and 7 blue cards. A card is randomly drawn from the bag. How many outcomes are in the sample space?

a)

9

b)

11

c)

7

d)

16

38.

A bag contains 5 red cards, 4 yellow cards, and 7 blue cards. A card is randomly drawn from the bag. If X is the event of drawing a card which is not yellow, what are the outcomes favorable to X?

a)

The outcomes favorable to event X are drawing 5 red cards and 7 blue cards.

b)

The outcomes favorable to event X are 16 cards.

c)

The outcomes favorable to event X are 4 yellow cards.

d)

The outcomes favorable to event X are drawing no cards.

39.

A bag contains 5 red cards, 4 yellow cards, and 7 blue cards. A card is randomly drawn from the bag. If Y is the event of drawing a blue card, what does the complement of Y mean?

a)

The complement of Y is drawing a red card.

b)

The complement of Y is drawing a non-blue card.

c)

The complement of Y is drawing a yellow card.

d)

The complement of Y is drawing no card.

40.

A coin is flipped repeatedly and the outcomes are HTTHHHTHTHTHTHHTHHTH. What is the experimental probability that the coin lands on heads when you flip the coin again?

a)

.2

b)

.5

c)

.7

d)

.6

41.

A spinner with outcomes, A, E, O and B is spun and the letter at which the arrow is pointing is recorded. After spinning the spinner several times, it generates the following outcomes: OABBBEAOOBAA. What is the experimental probability that the arrow points at a vowel if you spin the spinner again?

a)

.33

b)

.5

c)

.66

d)

1

42.

A survey was conducted on 100 randomly selected people about the types of books they usually read. The survey results show that 58 people read novels, 40 people read science fiction, and 10 people read neither. Find the number of people surveyed who read both novels and science fiction.

a)

8

b)

24

c)

98

d)

42

43.

If a child is randomly selected, what is the probability that the selected child is at least 10 years old but not yet 14 years old?

a)

.2

b)

.55

c)

1

d)

.15

44.

All the possible results of an activity is called what?

a)

Biased

b)

Mutually Exclusive

c)

Complement

d)

Outcomes

45.

The collection of all possible outcomes from an activity is known as a(n)

a)

Sample Space

b)

Distribution

c)

Uniform Probability Model

d)

Nonuniform Probability Model

46.

What is name of the collection of outcomes from an activity?

a)

Probability

b)

Event

c)

Theoretical Probability

d)

Venn Diagram

47.

What is a way to accurately describe how good the chances are that an event will occur?

a)

Functional

b)

Table

c)

Probability

d)

Complement

48.

This term means that the chance of each outcome is equal.

a)

Balanced

b)

Probability

c)

Venn Diagram

d)

Fair

49.

An activity that favors one particular outcome(s) is termed what?

a)

Biased

b)

Unbiased

c)

Balanced

d)

Three Dimensional

50.

When two events cannot happen at the same time, they are said to be what?

a)

Complement

b)

Probability

c)

Mutually Exclusive

d)

Theoretical

51.

What is the term for the region in the Venn diagram that is outside the event?

a)

Probability

b)

Coordinate Plane

c)

Circle One

d)

Complementary Event

52.

What is the term for the number of observations of a data value.

a)

Complement

b)

Observed Frequency

c)

Vertex

d)

Common Area

53.

What is the term for the probability based on data collected or observations made in an experiment.

a)

Experimental Probability

b)

Theoretical Probability

c)

Operational Probability

d)

Functional Probability

54.

The ratio of the number of favorable outcomes to the total number of equally like outcomes is called what?

a)

Experimental Probability

b)

Dastardly Probability

c)

Theoretical Probability

d)

Historical Probability

55.

A table that gives all the possible outcomes and their corresponding probabilities is known as a(n)?

a)

Probability Notation

b)

Venn Diagram

c)

Queen's Table

d)

Probability Model

56.

A probability model in which all the outcomes have an equal probability is called a(n)?

a)

Venn Diagram

b)

Non-Uniform Probability Model

c)

Uniform Probability Model

d)

Complement

57.

Identify the shaded area...

a)

A

b)

B

c)

A'

d)

B'

58.

The diagram shows the sports played by 80 students.


If a student is picked at random, what is the probability that they play football?

a)

66/80

b)

4/80

c)

18/80

d)

49/80

59.

The diagram shows the sports played by 80 students.


If a student is picked at random, what is the probability that they play football only?

a)

66/80

b)

4/80

c)

18/80

d)

49/80

60.

The diagram shows the sports played by 80 students.


If a student is picked at random, what is the probability that they play all three sports?

a)

31/80

b)

45/80

c)

62/80

d)

67/80

61.

The diagram shows the sports played by 80 students.


If a student is picked at random, what is the probability that they play Hockey and Rugby?

a)

36/80

b)

5/80

c)

41/80

d)

44/80

62.

The diagram shows the sports played by 80 students.


If a student is picked at random, what is the probability that they play any of the three sports?

a)

79/80

b)

1/80

c)

74/80

d)

6/80

63.

The diagram shows the sports played by 80 students.


If a student is picked at random, what is the probability that they play Rugby or Hockey?

a)

75/80

b)

8/80

c)

13/80

d)

44/80

64.

The diagram shows the sports played by 80 students.


If a student is picked at random, what is the probability that they don't play Rugby?

a)

24/80

b)

77/80

c)

23/80

d)

17/80