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167 Unit 8 Probability Review

Total questions: 43

Worksheet time: 1hrs 26mins

Name
Class
Date
1.

You pick one marble from this bag. What is the probability of picking white? (plain white)

a)

3/10

b)

1/3

c)

4/10

d)

1/2

2.

What is the probability of spinning green?

a)

0

b)

1/2

c)

1/3

d)

1/4

3.

There are 10 marbles in this bag. What is the probability of picking yellow OR green?

a)

4/10

b)

5/10

c)

6/10

d)

1/5

4.

There are 6 boys and 8 girls in a classroom. What is the probability that the teacher randomly selects a boy?

a)

8/6

b)

6/8

c)

3/7

d)

8/14

5.

An ice cream parlor has 5 different flavors, 4 toppings, and 2 types of cones. How many possible ice cream combinations are there?

a)

11

b)

20

c)

30

d)

40

6.

You roll a standard dice two times. What is the probability of getting a 6 on the first roll, then an even number on the second roll?

a)

1/6

b)

1/9

c)

1/12

d)

1/36

7.

You toss a coin once and a standard dice once. What is the size of the sample space?

a)

2

b)

6

c)

8

d)

12

8.
P(not A) = 
*Remember to simplify.*
a)
6/8
b)
3/4
c)
2/8
d)
1/4
9.

How many outfits can you make from a choice of 3 shirts, 2 pants and 4 pairs of shoes?

a)

9

b)

10

c)

32

d)

24

10.

What is the chance of an event happening in theory?

a)

Theoretical Probability

b)

Experimental Probability

c)

Probability

d)

Theories

11.

Rolling an 8 on a 6-sided die

a)

Impossible

b)

Unlikely

c)

Equally Likely

d)

Likely

e)

Certain

12.
A bag of marbles has 8 red marbles and 6 purple marbles. Jennifer will randomly select 1 marble from the bag. What is the probability that she will select a purple marble?
a)
6/8
b)
3/4
c)
6/14
d)
3/7
13.
A bag of candy contains 2 packs of Skittles, 4 Twizzlers, and 10 Reese's cups. What is the probability of reaching into the bag and choosing either a pack of Skittles or a Reese cup?
a)
3/4
b)
1/4
c)
3/8
d)
1/8
14.

Billy has 54 marbles. 10 are blue, 9 are green, 25 are red, and 10 are yellow. What is the probability of drawing out a yellow marble? SIMPLIFY

a)

54/54

b)

10/54

c)

12/54

d)

5/27

15.

What is the probability of landing on the blue or red parts of the spinner? Remember to SIMPLIFY

a)

4/8

b)

7/8

c)

1/8

d)

1/2

16.
Which of the following situations is represented by this tree diagram?
a)
3 shirt options, 6 pants options, and 12 shoe options
b)
3 shirt options, 2 pants options, and 2 shoe options
c)
2 shirt options, 3 pants options, and 1 shoe option
17.
Theoretical Probability is?
a)
What Should happen
b)
What does happen
c)
What Will Happen
d)
What I want to Happen
18.
What is the probability of spinning green?
a)
0
b)
1/4
c)
1/2
d)
3/4
19.
Which of the following describes experimental probability?
a)
Perform a situation and count the number of possibilities
b)
Use trials to count the number of desired outcomes
c)
Perform an experiment to determine the probability of an event
d)
Use a formula to determine the expected probability of an event
20.

When rolling a standard number cube, what is the theoretical probability of rolling a number less than 3?

a)

1/3

b)

1/6

c)

1/2

d)

2/3

21.

Chris tosses three quarters up in the air. What is the probability that all three will land on tails?

a)

1/2

b)

1/6

c)

1/8

d)

3/8

22.

Tammy surveyed 20 students at Benton Middle School, and 8 said they would vote for Jayla for class president. There are 575 students who will vote in the election. If the result's of Tammy's survey are used to predict the outcome of the election, which is the closest number of votes Jayla is predicted to receive?

a)

160

b)

230

c)

143

d)

500

23.

How many possible outcomes are there if a number cube is rolled twice.

a)

12

b)

18

c)

24

d)

36

24.

Experimental Probability is:

a)

What will happen

b)

What actually happens

c)

What should happen

d)

What I think happens

25.
What does the Probability tell you if it is a fraction, decimal or percent close to zero?
a)
There is a high chance of it happening
b)
There is a low chance of it happening
c)
there is zero chance of it happening
d)
The data s incomplete
26.
What does the Probability tell you if the data is close to 1?
a)
There is a 1% chance
b)
There is almost 100% Chance
c)
It is an unlikely chance
d)
The data is incomplete
27.
What does the Probability tell you if the data results in 1/2?
a)
Only 1/2 the data is present
b)
There is a 50-50 chance 
c)
50% of the data is incorrect
d)
.5, 50% and 1/2 are all the same
28.

The counselors at a camp are scheduling activities for family visitation day. They decide to conduct a survey to determine which activities campers would most like to share with their families.

Which describes a method for getting a sample that is both representative and random?

a)

During the dinner hour, announce that any camper interested in doing so can collect and complete a survey.

b)

During camp free time, ask every fifth camper in the arts and crafts hall to complete a survey.

c)

During morning roll call, ask every tenth camper to complete a survey.

d)

During camp free time, ask all campers down at the lake to complete a survey.

29.
_______ is a part of a group being surveyed.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile
30.
_______ is the entire group of objects or individuals considered for a survey.
a)
Sample
b)
Population
c)
Random Sample
d)
Quartile
31.
True or False: all samples lead to a good prediction about an entire population.
a)
True
b)
False
32.
A school surveys all 7th grade boys to determine what to sell in the school store.  This sample is _________.
a)
Biased
b)
Unbiased
c)
Representative
d)
Peanut butter cups
33.
A school survey asked 50 girls to identify their favorite items on the school cafeteria menu. This sample is ________________.
a)
Biased
b)
Unbiased
c)
Representative
d)
Numerical
34.
A student wants to know which type of pizza the students at his high school prefer. Which option would give a unbiased, representative sample:
a)
Asking all the students in the hot lunch line.
b)
Asking 10 random students from each homeroom.
c)
Asking every other student who gets off a school bus.
d)
Asking all the 10th graders.
35.
A student surveys mathematics teachers to get their opinion on teaching.  What is the sample?
a)
All teachers in the world.
b)
All teachers within the school.
c)
All mathematics  teachers in the school.
d)
All teachers except mathematics teachers.
36.
A computer manufacturer surveys its customers who purchased laptop computers to ask what software the company should include with its computer.  Identify the population.
a)
Customers who purchased laptop computers.
b)
Customers of the store.
c)
Customers who are interested in software.
d)
Computer manufacturers
37.
An ice cream shop offers a choice of three types of cones and 31 flavors of ice cream.  A customer gets to choose a cone and a type of ice cream.  How many different 1-scoop ice cream cones can a customer order? 
a)
34
b)
2
c)
3
d)
93
38.
A particular model at a New Car Dealership comes in 4 trim levels, 5 different colors, and 3 different interiors. How many different versions of this car model can be created from these options?
a)
180
b)
23
c)
12
d)
60
39.
How many styles of sneakers are possible if Jared can choose from high-top or low-top, shoelaces or velcro, and the colors black, white, and red?
a)
12
b)
7
c)
223
d)
64
40.
The cafeteria is serving three kinds of sandwiches:  tuna (T), chicken, (C), and peanut butter (P).  They are also serving a choice of two drinks:  milk (M) or water (W).  Which shows the complete set of possible combinations?
a)
TW, CW, PW
b)
TW, TM, TC, CW, PW
c)
TW, TM, CW, CM, PW, PM
d)
TCP, MW
41.

When a sample does not accurately represent the population it is a:

a)

A. Unbiased sample

b)

B. Biased sample

42.

100 seventh graders were asked to do a book report about one of these four zoo animals. The number of students who chose each animal is shown in the table. If 250 seventh graders had to choose of the four animals, predict how many would choose to write about a giraffe.

a)

60 students

b)

50 students

c)

40 students

d)

30 students

43.

Carl wants to know the favorite sport of people at his school so he asks his baseball team.

a)

A. Biased

b)

B. Unbiased

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