Quiz about Probability STAAR Review

Question 1

A bag contains 3 red marbles, 5 blue marbles, and 2 green marbles. If a marble is drawn at random, what is the probability that it is blue?

Accepted Answer

$$\frac{1}{2}$$

Answer

$$\frac{1}{5}$$

Answer

$$\frac{1}{10}$$

Answer

$$\frac{1}{3}$$

Question 2

In a simple experiment, a coin is flipped 100 times and lands on heads 60 times. What is the experimental probability of getting heads?

Accepted Answer

3/5

Answer

2/5

Answer

1/2

Answer

7/10

Question 3

A die is rolled once. What is the theoretical probability of rolling a number greater than 4?

Accepted Answer

$$\frac{1}{3}$$

Answer

$$\frac{1}{6}$$

Answer

$$\frac{1}{2}$$

Answer

$$\frac{2}{3}$$

Question 4

A spinner is divided into 4 equal sections numbered 1 to 4. If the spinner is spun 50 times and lands on 3 a total of 15 times, what is the experimental probability of landing on 3?

Accepted Answer

3/10

Answer

3/20

Answer

1/4

Answer

7/20

Question 5

A jar contains 4 red, 3 blue, and 3 yellow balls. If a ball is drawn at random, what is the probability that it is not red?

Accepted Answer

$$\frac{7}{10}$$

Answer

$$\frac{1}{2}$$

Answer

$$\frac{3}{10}$$

Answer

$$\frac{3}{5}$$

Question 6

In a class of 30 students, 18 are girls. If a student is chosen at random, what is the probability that the student is a boy?

Accepted Answer

2/5

Answer

1/2

Answer

3/5

Answer

7/10

Question 7

A card is drawn from a standard deck of 52 cards. What is the probability of drawing a heart?

Accepted Answer

$$\frac{1}{4}$$

Answer

$$\frac{1}{3}$$

Answer

$$\frac{1}{2}$$

Answer

$$\frac{1}{13}$$

Question 8

A coin is flipped and a die is rolled. What is the probability of getting heads and a 4?

Accepted Answer

$$\frac{1}{12}$$

Answer

$$\frac{1}{2}$$

Answer

$$\frac{1}{6}$$

Answer

$$\frac{1}{36}$$

Question 9

A bag contains 6 apples and 4 oranges. If a fruit is picked at random, what is the probability that it is an apple?

Accepted Answer

$$\frac{3}{5}$$

Answer

$$\frac{1}{2}$$

Answer

$$\frac{2}{5}$$

Answer

$$\frac{1}{10}$$

Question 10

A box contains 5 red, 7 blue, and 8 green balls. If a ball is drawn at random, what is the probability that it is blue?

Accepted Answer

$$\frac{7}{20}$$

Answer

$$\frac{1}{4}$$

Answer

$$\frac{3}{8}$$

Answer

$$\frac{1}{2}$$

Question 11

In a game, a player rolls a die and flips a coin. What is the probability of rolling a 6 and getting tails?

Accepted Answer

$$\frac{1}{12}$$

Answer

$$\frac{1}{2}$$

Answer

$$\frac{1}{6}$$

Answer

$$\frac{1}{36}$$

Question 12

A jar contains 10 red, 5 blue, and 5 yellow marbles. If a marble is drawn at random, what is the probability that it is yellow?

Accepted Answer

$$\frac{1}{4}$$

Answer

$$\frac{1}{5}$$

Answer

$$\frac{1}{2}$$

Answer

$$\frac{1}{3}$$

Question 13

A coin is flipped 200 times and lands on tails 120 times. What is the experimental probability of getting tails?

Accepted Answer

3/5

Answer

2/5

Answer

1/2

Answer

7/10

Question 14

A deck of cards is shuffled and a card is drawn. What is the probability of drawing a king?

Accepted Answer

$$\frac{1}{13}$$

Answer

$$\frac{1}{26}$$

Answer

$$\frac{1}{52}$$

Answer

$$\frac{1}{4}$$

Question 15

A bag contains 8 red, 6 blue, and 6 green marbles. If a marble is drawn at random, what is the probability that it is not green?

Accepted Answer

$$\frac{7}{10}$$

Answer

$$\frac{1}{2}$$

Answer

$$\frac{3}{5}$$

Answer

$$\frac{4}{5}$$

Question 16

In a class of 25 students, 10 students have a pet dog. If a student is chosen at random, what is the probability that the student does not have a pet dog?

Accepted Answer

3/5

Answer

2/5

Answer

1/2

Answer

7/10

Question 17

The spinner is divided into eight equal parts. Find the theoretical probability of landing on the given section of the spinner.P(white)=

Accepted Answer

5/8

Answer

1/8

Answer

7/8

Answer

3/7

Question 18

In a survey, 60% of people prefer chocolate ice cream over vanilla. If 200 people were surveyed, how many are likely to prefer vanilla ice cream?

Accepted Answer

80

Answer

150

Answer

40

Answer

120

Question 19

100 second 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 second graders had to choose of of the four animals, predict how many would choose to write about a giraffe.

Accepted Answer

60 students

Answer

50 students

Answer

40 students

Answer

30 students

Question 20

Ethel will spin each spinner one time.

Which statement is true about Ethel's spins?

Accepted Answer

The arrow is more likely to land on a red section in Spinner A than in Spinner B.

Answer

The arrow is less likely to land on a green section in Spinner A than in Spinner B.

Answer

The arrow is equally likely to land on a yellow section in Spinner A than in Spinner B.

Answer

The arrow is more likely to land on a blue section in Spinner A than in Spinner B.

Question 21

A bag contains 9 red tiles, 10 blue tiles, and 6 green tiles. A tile is randomly drawn from the bag. Which statement is true?

Accepted Answer

Drawing a yellow tile is impossible.

Answer

Drawing a red tile is more likely that drawing a blue tile.

Answer

Drawing a green tile is more likely than drawing a blue tile.

Answer

Drawing a red tile is less likely than drawing a green tile.

Question 22

Kit spins a spinner and rolls a 1-6 number cube. The spinner has 5 equal parts numbered 1-5. Which statement is true?

Accepted Answer

Spinning an even number is more likely than rolling an even number.

Answer

Spinning a 5 is equally likely to rolling a 5.

Answer

Spinning an odd number is equally likely to rolling an odd number.

Answer

Spinning a 3 is more likely than rolling a 5.

Question 23

Look at the diagram. It represents a 6-by-6 foot board. A point randomly chosen from the board 72 times.

Which statement is true?

Accepted Answer

The selected point is less likely to be in the shaded area than the unshaded area.

Answer

The selected point is more likely to be in the shaded area than the unshaded area.

Answer

The selected point is equally likely to be in the shaded area than the unshaded area.

Answer

The selected point is certain to be in the unshaded area.

Question 24

The letters in the word AUGUST are placed into a bag. What is the probability of selecting a U?

Accepted Answer

1/3

Answer

2/5

Answer

3/5

Answer

3/6

Question 25

Michael has a set of five cards shown below. Michael will randomly select a card, not replace it, and then select another card. What is the probability that he selects a prime number and then a 1?

Accepted Answer

3/20

Answer

1/5

Answer

4/5

Answer

3/25

Probability STAAR Review

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