Free Printable Probability Review

1.

In a bag of marbles, 1/5 are white, 1/4 are yellow, 1/20 are brown, and 1/2 are gray. What color marble are you most likely to pick?

a)

white

b)

yellow

c)

brown

d)

gray

2.

At the Braves game last night, 13 out of the first 60 people that entered the stadium were not wearing a Braves t-shirt. If this sample is representative of the 4,800 people attending the game, about how many of them will probably NOT be wearing a Braves t-shirt?

a)

1,040

b)

780

c)

3,760

d)

2,167

3.

Below are the results of rolling a number cube in two different experiments.

Experiment A: 1, 5, 3, 4, 4, 6, 2, 2, 4, 6

Experiment B: 5, 2, 1, 2, 1, 4, 6, 3, 5, 5

What is the probability of rolling a 3 in Experiment A and rolling a 5 in Experiment B?

a)

$\frac{3}{100}$

b)

$\frac{2}{5}$

c)

$\frac{1}{5}$

d)

$\frac{1}{100}$

4.

Adrian is at dinner with his family. The chart shows his choices for dinner.

What is the probability that he chooses steak, baked potato, and a cookie?

a)

$\frac{1}{9}$

b)

$\frac{1}{3}$

c)

$\frac{1}{24}$

d)

$\frac{1}{8}$

5.

Mia has four different flavors of starbursts in her bookbag: strawberry, orange, and lemon. The probability of randomly selecting an orange starburst from her bag is 30%. The probability of randomly selecting a strawberry starburst from her bag is 0.5. The probability of randomly selecting a lemon starburst is $\frac{1}{5}$ .

Suppose Mia had a total of 40 starbursts in her bookbag. How many orange starburst would Mia expect to see in her bookbag?

a)

4

b)

8

c)

12

d)

16

6.

Brayden has one bag with 5 tiles in it lettered A, B, C, D, and E. He also has a second bag with 4 tiles numbered 1, 2, 3 and 4.

What is the probability Brayden wil select a tile with "B" written on it and also a tile with a "2" on it?

a)

$\frac{1}{9}$

b)

$\frac{1}{20}$

c)

$\frac{2}{9}$

d)

$\frac{1}{25}$

7.

Aniyah is packing for a six-day trip. Of her shirt colors, three are green, two are black, and one is pink. Aniyah does not plan on wearing a t-shirt more than once.

What is the probability that she will wear black on the first day of her trip an then wear pink on the second day of her trip?

a)

$\frac{1}{10}$

b)

$\frac{1}{3}$

c)

$\frac{1}{18}$

d)

$\frac{1}{15}$

8.

Timothy spins the spinner 8 times. He lands on green 2 times, yellow 5 times, and blue 1 time. If the spins the spinner a 9th time, which of the following statements is true?

a)

It is more likely to land on green.

b)

It is more likely to land on yellow.

c)

It is more likely to land on blue.

d)

It is equally likely to be green, yellow, or blue.

9.

Landen spins the spinner and rolls a number cube. What is the theoretical probability that he spins a blue and rolls a number greater than 4?

a)

$\frac{1}{18}$

b)

$\frac{1}{6}$

c)

$\frac{1}{9}$

d)

$\frac{1}{3}$

10.

Adrian is ordering dinner. The table shows his choices for dinner.

How many different combinations of 1 main dish, 1 side, and 1 dessert are there?

a)

9

b)

12

c)

24

d)

60

11.

Mia has four different flavors of starbursts in her bookbag: strawberry, orange, and lemon. The probability of randomly selecting an orange starburst from her bag is 30%. The probability of randomly selecting a strawberry starburst from her bag is 0.5. The probability of randomly selecting a lemon starburst is $\frac{1}{5}$ .

Which phrase describes the likelihood that Mia chooses a cherry starburst?

a)

impossible

b)

likely

c)

unlikely

d)

certain

12.

Brayden has one bag with 5 tiles in it lettered A, B, C, D, and E. He also has a second bag with 4 tiles numbered 1, 2, 3 and 4.

Which sample space shows all possible outcomes Brayden could draw if he selects one tile from each bag?

a)

{A1, B2, C3, D4, E1}

b)

{A1, B1, C1, D1, E1, A2, B2, C2, D2, E2, A3, B3, C3, C3}

c)

{A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4, E1, E2, E3, E4}

d)

{A1, B2, C3, D4, A5, B1, C2, D3, A4, B5, C1, D2, A3, B4, C5, D1, A2, B3, C4, D5}

13.

Brayden has one bag with 5 tiles in it lettered A, B, C, D, and E. He also has a second bag with 4 tiles numbered 1, 2, 3 and 4.

Suppose Brayden combined the tiles into one large bag instead of two. If Brayden wanted to draw a "B" and a "2" without replacement, what would the new probability be?

a)

$\frac{1}{72}$

b)

$\frac{1}{81}$

c)

$\frac{1}{20}$

d)

$\frac{2}{9}$

14.

Aniyah is packing for a six-day trip. Of her shirt colors, three are green, two are black, and one is pink. Aniyah does not plan on wearing a t-shirt more than once.

What is the probability that she will NOT wear black on the first day of her trip?

a)

$\frac{1}{3}$

b)

$\frac{2}{3}$

c)

$\frac{1}{2}$

d)

$\frac{5}{6}$

15.

There are 4 black marbles and 2 white marbles in a bag. What is the probability of choosing a black marble, not replacing it, and then choosing white.

a)

4/15

b)

3/17

c)

2/5

d)

2/19

16.

Is the event INDEPENDENT or DEPENDENT?
You have a jar with 24 pieces of chocolate candy and 14 pieces of orange candy. We take one piece of candy at random from the jar, put it back, and then take a second piece of candy at random from the jar.

a)

Independent

b)

Dependent

17.

The tree diagram shows the outcomes of rolling a die and flipping a coin.
How many total outcomes are there?

a)

6

b)

12

c)

24

d)

36

18.

Baylee will roll a number cube and flip a coin for a probability experiment. The faces of the number cube are labeled 1-6. The coin can land on heads or tails. If Baylee rolls the number cube once and flips the coin once, which list contains only the outcomes in which the number cube lands on a number greater than 4?

a)

5, Heads

5, Tails

6, Heads

6, Tails

b)

5, Heads

6, Tails

c)

1, Heads 1, Tails

2, Heads 2, Tails

3, Heads 3, Tails

4, Heads 4, Tails

5, Heads 5, Tails

6, Heads 6, Tails

d)

4, Heads

4, Tails

5, Heads

5, Tails

6, Heads

6, Tails

19.

What is the probability of spinning green?

a)

0

b)

1/4

c)

1/2

d)

3/4

20.

In a box there are 3 red pens, 2 green pens, and 1 blue pen. What is the probability of picking a red pen, replacing it, and then picking a green pen?

a)

1/2

b)

4/11

c)

1/6

d)

2/3

Probability Review

Total questions: 20

Worksheet time: 40mins

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