Probability Review

On Sarah’s shelf are 6 mystery books, 5 science books, 4 history books, and 3 adventure books. Sarah will randomly choose one book to read. What is the probability that she will choose a mystery book?

• $\frac{5}{18}$

• $\frac{1}{3}$

• $\frac{6}{13}$

• $\frac{1}{6}$

Tags

CCSS.6.NS.A.1

CCSS.6.RP.A.3

If you were to select one shape at

random from the array, what is the

probability it will be a heart?

• $\frac{1}{5}$

• $\frac{1}{25}$

• $\frac{5}{24}$

• $\frac{4}{25}$

Tags

CCSS.6.NS.A.1

CCSS.6.RP.A.1

CCSS.6.RP.A.3

What is the experimental probability of

rolling a number greater than 4?

• $\frac{4}{9}$

• $\frac{1}{6}$

• $\frac{5}{18}$

• $\frac{1}{9}$

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.B.5

Amanda used a standard deck of 52 cards and selected a

card at random. She recorded the suit of the card she picked, then replaced the card. The results are in the

table to the right. Based on her results, what is the experimental probability of selecting a heart?

• $\frac{7}{52}$

• $\frac{1}{7}$

• $\frac{1}{10}$

• $\frac{7}{30}$

Tags

CCSS.6.NS.A.1

CCSS.6.RP.A.1

CCSS.6.RP.A.3

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.B.5

Vera planted a variety of flowers for a planting experiment. The totals of the first 24 flowers are shown in the table. Based on the information in the table, in how many of the next 192 trials will the flower be a tulip?

• 20

• 40

• 30

• 50

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

CCSS.6.RP.A.3

Justin has 50 pictures in an album. Of these pictures, 30 show his friends, 12 show his family, and 8 show only Justin. Justin is in 1/2 of the pictures that show his friends and 1/2 of the pictures that show his family. Based on this information, which statement is true?

• The probability of randomly selecting a picture that shows Justin with his friends is greater than the probability of randomly selecting a picture that shows Justin with his family.

• The probability of randomly selecting a picture that shows Justin is 8%.

• The probability of randomly selecting a picture that shows Justin with his family is 5 timesthe probability of randomly selecting a picture that shows only his friends.

• The probability of randomly selecting a picture that does not show Justin is 21%.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.3

The manager of a movie theater randomly surveyed 50 people who entered the movie theater on Friday. The manager asked about the type of movie each person preferred. The results of the survey are shown in the table. Based on the results in the table, which statement about a person who will go to this theater next Friday is true?

• The person is three times as likely to prefer comedy as horror.

• The person is twice as likely to prefer drama as horror.

• The person is less likely to prefer horror or drama than action.

• The person is more likely to prefer horror or comedy than action or drama.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.3

CCSS.6.SP.A.2

CCSS.6.SP.B.5

The 200 students in a school band will attend an awards dinner. A random survey of 25 of these students was conducted to determine how many of each meal should be prepared for the dinner. Based on the survey results, which of these is the best prediction of the meals wanted by the 200 students?

• There are 16 students who want a beef meal.

• There are 52 students who want either a chicken meal or a pasta meal.

• There are 32 more students who want a beef meal than want a chicken meal.

• There are 24 more students who want a pasta meal than want a chicken meal.

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Mathematical Equivalence

ON

Tags

CCSS.7.EE.B.3

Kevin has these shirts in his closet.

• 3 blue shirts
• 5 red shirts
• 3 purple shirts
• 4 white shirts

Kevin will randomly choose one shirt. Then, he will put it back and randomly choose another shirt. What is the probability that he will choose a red shirt and then a white shirt?

• $\frac{4}{45}$

• $\frac{2}{21}$

• $\frac{3}{5}$

• $\frac{1}{3}$

Tags

CCSS.6.NS.A.1