Predicting Populations

In a random survey of 50 students at Great Middle School, 32 said chocolate was their favorite flavor of yogurt. The school has 450 students. How many of them are likely to select chocolate as their favorite flavor? 

• 144

• 162

• 225

• 288

The grocery store will ask another group of 25 dentists each to recommend a toothpaste brand. Based on the information in the table, what is the most reasonable prediction of the number of dentists in this group who will recommend Brand T?

• 3

• 2

• 9

• 4

Tags

CCSS.7.RP.A.3

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

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

The table shows the results of a survey of 200 people attending a hockey game.
The attendance for the hockey game is about 25,000 visitors each game.  Based on the table, how many people out of 25,000 could be expected to buy a pennant?

• 1,375

• 1,650

• 2,750

• 3,850

Tags

CCSS.6.RP.A.3B

• 10820
• 10920
• 11820
• 11920

A toy store owner tracking how much kids spend each month on toys. Which choice best represents a population?

• All of the kids who buy toys.

• 227 wealthy kids.

• 228 boys age 7 - 15

• 235 kids from age 10 to 15.

What is the population?

• All students at Commodore

• All students in section 702

• The 10 students Mr. Cardarella picks

• All students in 7th grade

• 15

• 27

• 45

• 75

• 2

• 4

• 8

• 16

Tags

CCSS.7.RP.A.3