Probability, Complementary Events, Predictions

The table shows the number of votes for different school mascots. Based on the information in the table, what is the most reasonable prediction of the number of votes for eagle out of the next 25 votes?

• 72
• 8
• 1
• 21

Tags

CCSS.7.SP.C.6

A principal randomly chose 40 students from grade 5. Of these students, 9 were wearing watches. Based on this information, what is the most reasonable prediction of the number of students wearing watches in a group of 120 students from grade 5?

• 27
• 9
• 18
• 80

Tags

CCSS.7.RP.A.3

Twenty-five people were asked which gift was their favorite.  Using the table,which statement is false?

• Perfume & flowers were equally favored
• Jewelry was the favorite 1/5 of the time.
• Perfume & clothes were favored half the time.
• Flowers were twice as popular as clothes

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

CCSS.7.SP.B.4

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.

• 60 students
• 50 students
• 40 students
• 30 students

Tags

CCSS.7.RP.A.2C

• 15760
• 17560
• 16760
• 16660

Tags

CCSS.6.RP.A.3C

• 23
• 25
• 35
• 50

Tags

CCSS.7.RP.A.3

Aaron took a multiple choice test.  There were 25 questions, of which he answered 4 incorrectly.  At this rate, how many questions should Aaron expect to answer incorrectly if he takes a test with a total of 150 questions?

• 123
• 24
• 373
• 47

Tags

CCSS.6.RP.A.3B

The probability of a video game being defective is 1 out of 20.  About how many video games would be defective in a shipment of 490 video games? (Round your answer to the nearest whole number.)

• 490
• 25
• 98
• 100

Tags

CCSS.7.SP.C.6

There are 480 students in Marla’s school.  In her classroom, there are 3 left-handed students and 17 right-handed students.  Predict the number of left-handed students in the whole school.

• 72
• 85
• 124
• 208

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Shannon made the last 12 out of 20 shots for the varsity basketball team.  How many shots would you expect him to make in his next 160 shot attempts?

• 96
• 120
• 24
• 80

Tags

CCSS.6.RP.A.3B