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Worksheets

Probability Test Review

Total questions: 50

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

A bag contains circular chips that are the same size and weight. There are 8 purple, 4 pink, 8 white, and 2 blue chips in the bag. The probability of drawing a pink chip is 2/11. What is the probability of not drawing a pink chip?

a)

4/22

b)

9/11

c)

14/22

d)

3/5

2.

What is an outcome in probability?

a)

An activity based on chance

b)

Each repetition of an experiment

c)

A possible result of a probability experiment

d)

A number from 0 to 1 that describes how likely an event is to occur

3.

During basketball practice Martha made 9 out of 15 free throws. What is the experimental probability that she will make her next attempt.

a)

45%

b)

75%

c)

90%

d)

60%

4.

Andy has 30 marbles in a bag. 17 are blue. The rest are red. What is the probability of drawing a red marble?

a)

50%

b)

43%

c)

28%

d)

13%

5.

Jaclyn is a soccer goalie. If she has 21 out of 25 saves in practice, what is the experimental probability that she will have a save on the next shot on goal?

a)

88%

b)

84%

c)

80%

d)

82.5%

6.

What is the probability of rolling a 3 or a 4 on a die?

a)

1 out of 6

b)

2 out of 3

c)

3 out of 6

d)

1 out of 3

7.

Lawrence reaches first base 40 out of 100 times. What is the probability of Lawrence reaching first base?

a)

40%

b)

4%

c)

80%

d)

8%

8.

Sam reaches 1st base 80% of the time. Out of 350 times at bat, how many times can Sam expect to reach first base?

a)

100

b)

80

c)

200

d)

280

9.

If you roll a number cube 12 times, about how many times do you expect to roll a number less than five?

a)

4/6

b)

2/3

c)

4/9

d)

1/3

10.

How many different outfits can be made when choosing between three shirts, four pairs of shorts and two pairs of shoes?

a)

20

b)

18

c)

12

d)

24

11.

How many different sandwich combinations can be made from two types of bread, three types of meat, and three types of cheese if each sandwich has bread, meat, and cheese?

a)

6

b)

18

c)

12

d)

3

12.

Find the probability of choosing a red marble from a bag, not replacing it, and drawing another red marble from a bag of 4 red marbles and 5 blue marbles.

a)

16/81

b)

4/9

c)

13/70

d)

1/6

13.

What is the probability of rolling a 5 on a die and flipping a heads on a coin.

a)

3/4

b)

5/6

c)

1/12

d)

1/2

14.

A pizza parlor offers seven different pizza toppings: pineapple, mushrooms, canadian bacon, onions, pepperoni, beef, and sausage. What is the probability that a random order for a two-topping pizza includes pepperoni?

a)

42

b)

14

c)

9

d)

21

15.

There are 4 red cards and 8 black cards in a bag. How likely is it that you will randomly draw a blue card?

a)

likely

b)

unlikely

c)

certain

d)

impossible

16.

Liz tosses a coin. She also spins a spinner evenly divided into fourths and numbered 1–4. What are the possible outcomes?

a)

H, T, 1, 2, 3, 4

b)

H1, H2, H3, H4, T1, T2, T3, T4

c)

H1, H2, H3, H4

d)

T1, T2, T3, T4

17.

A goalie in an ice hockey game blocked 15 out of 21 shots on goal. What is the experimental probability that he will block the next shot on goal?

a)

3/7

b)

3/5

c)

1/2

d)

5/7

18.

How many different 5-member groups can be formed from 8 people ?

a)

13

b)

40

c)

56

d)

70

19.

A bag has 9 red marbles and 6 green marbles. Find the probability of drawing a green marble, replacing it, and drawing another green marble.

a)

2/5

b)

4/25

c)

2/3

d)

4/5

20.

Each letter of the words SEVENTH GRADE is written on a card and placed in a bag. What is the probability of picking a vowel on the first pick, replacing the card, and then picking a consonant?

a)

2/9

b)

2/3

c)

1/3

d)

1

21.

The results of a survey shows that baseball is the favorite sport for 22 out of 30 people. Which percent is closest to the probability baseball is not a person's favorite sport?

a)

27%

b)

70%

c)

73%

d)

30%

22.

What is the probability of rolling an odd number or a 2 on a die?

a)

2/3

b)

1

c)

5/6

d)

none of these answers

23.

A number cube is rolled 75 times. A 1 was rolled 12 times, a 2 was rolled 13 times, a 3 was rolled 10 times, a 4 was rolled 9 times, a 5 was rolled 15 times, and a 6 was rolled 16 times. What is the experimental probability of rolling a 4?

a)

1/6

b)

4/25

c)

9/75

d)

4/75

24.

Two number cubes are rolled. What is the probability the sum of the cubes will be equal to 11?

a)

1/36

b)

1/18

c)

1/12

d)

1/6

25.

How many different codes can a combination lock have if there are three numbers on the lock and each number can be from 0-9?

a)

10

b)

84

c)

120

d)

none of the above

26.

How many pizza dishes can you get from when choosing from one crust (deep dish, thin, stuffed) and one topping (pepperoni, onion, peppers, plain cheese)?

a)

4

b)

12

c)

16

d)

8

27.

Use the spinner to find the probability.

P(not D) =

a)

5

b)

5/6

c)

0.63

d)

1/6

28.

Use the spinner to find the probability.

P(2 or 3) =

a)

1/4

b)

3/8

c)

2

d)

2/4

29.

A spinner marked with four sections blue, green, yellow, and red was spun 100 times. The results are shown in the table. If the spinner is spun 50 more times, how many of these times would you expect the pointer to land on blue?

a)

4 times

b)

5 times

c)

7 times

d)

34 times

30.

A bag contains 4 green tokens, 2 red tokens, and 4 purple tokens. Lisa drew a token out of the bag, recorded the result, and then put the token back into the bag. She did this 30 times and recorded the results in a bar graph. Use this information to answer the following questions.


What was the experimental probability of drawing a red token?

a)

1/30

b)

2/15

c)

8/30

d)

1/15

31.

Bailey tossed a coin 10 times. The results were 7 heads and 3 tails.


What is the experimental probability of tossing tails?

a)

1/3

b)

3/10

c)

3/7

d)

1/2

32.

A number cube labeled one though six is rolled and a letter is selected from the word MUSIC. Find the probability you will roll a 2 and select a S.

P(2 and S) =

a)

1/5

b)

1/6

c)

1/11

d)

1/30

33.

The number cube was rolled 50 times. How many times theoretically would you expect to see a 6?

a)

About 1

b)

About 6

c)

About 8

d)

About 10

34.

Kameron conducted a poll of 200 people in a mall concerning their cooking preferences. She found that 30 people favored chocolate cookies and the rest prefer sugar cookies. Based on the results, how many people out of 1000 can be expected to prefer SUGAR cookies?

a)

30

b)

150

c)

170

d)

850

35.

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

36.

Without looking Christy pulls socks from a drawer containing 2 white socks, 6 black socks, and 4 yellow socks. Find the probability of drawing a black then a yellow WITHOUT REPLACEMENT.

a)

1/6

b)

2/11

c)

1/2

d)

1/3

37.

A bag of marbles contains 10 Red, 8 Blue, and 2 White. What is the probability of drawing a blue marble and a red marble out of the bag? (WITHOUT REPLACING the first marble.)

a)

1/5

b)

4/19

c)

2/5

d)

4

38.

A bag of marbles contains 10 Red, 8 Blue, and 2 White. What is the probability of drawing a white marble and a red marble out of the bag? (WITHOUT REPLACING the first marble.)

a)

1/19

b)

2/19

c)

1/20

d)

2/20

39.

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

40.

A month of the year is selected at random. What is the probability that it has 31 days or starts with the letter A?

a)

1/6

b)

7/12

c)

3/4

d)

2/3

41.

A die is rolled then a letter in the word STATISTICS is randomly selected. What is the probability of at least a three, then the letter T?

a)

1/5

b)

3/20

c)

1/4

d)

29/30

42.
A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?
a)
3
b)
1/10
c)
3/10
d)
30%
43.
The letters that form the word MATHEMATICS are placed in a bowl. What is the probability of choosing a letter that is a vowel?
a)
8/121
b)
4/11
c)
2/11
d)
4/121
44.

What is the probability of an event happening based on an actual experiment?

a)

Theoretical Probability

b)

Experimental Probability

c)

Probability

d)

Theories

45.

Rolling an 8 on a 6-sided die

a)

Impossible

b)

Unlikely

c)

Equally Likely

d)

Likely

e)

Certain

46.

What is the theoretical probability that you will pull a red Skittle out of a bag containing 7 green, 8 red, 4 purple, and 9 yellow Skittles? Write as a fraction in simplest form.

a)

8/28

b)

4/8

c)

2/7

d)

7

47.

Kim spun the spinner 95 times and landed on 3 forty times. What is the experimental probability?

a)

42%

b)

43%

c)

44%

d)

45%

48.

You roll a single die numbered from 1 to 6 twice. What is the probability of rolling a 6 the first time and an odd number the second?

a)

1/6

b)

1/12

c)

1/18

d)

1/36

49.

Kevin had 6 nickels and 4 dimes in his pocket. If he took out one coin and then a second coin without replacing his first coin, what is the probability that the first coin was a nickel and the second coin is a dime?

a)

4/100

b)

24/100

c)

4/15

d)

10/19

50.
You roll a 12-sided die. What is the probability of rolling a 6?
a)
1/6
b)
6/12 = 1/2
c)
1/12
d)
6/6 = 1