Lesson 12.3

A recent survey of 800 seventh graders from across the state shows 4 out of 10 like to play paper football. How many students said they like to play paper football?

• 40 students
• 200 students 
• 320 students
• 8,000 students

Tags

CCSS.7.RP.A.3

Litzy collects data from a random sample of 7th graders. Out of 40 respondents, 7 attend afterschool programs. Of the 200 7th graders attending Litzy's school, how many would be expected to attend afterschool programs?

• 14 7th graders

• 28 7th graders

• 35 7th graders

• 42 7th graders

Tags

CCSS.7.SP.A.2

A town has 35,000 registered voters. A random sample of 500 voters finds that 125 are in favor of a new dog park. How many are likely to vote for the dog park?

• 25

• 125

• 2,625

• 8,750

Tags

CCSS.7.SP.A.2

A random sample of 50 was taken from a shipment of 12,000 light bulbs. There were 2 broken bulbs in the sample. How many broken bulbs would you expect in the entire shipment?

• 240

• 480

• 2,400

• 4,800

Tags

CCSS.7.RP.A.3

Anthony opened a new store and wants to conduct a survey to determine the best store hours. Which is the best representative sample?

• A group of randomly selected people who come to the store in one week.

• A group of randomly selected people who visit his website on one night.

• Every person he meets at his health club one night.

• The first 20 people who walk into his store one day.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Biased or Random?

Reign wants to determine the most popular brand of cereal in all of Kentucky. So he polls all the houses on his street to get a sample.

• Biased

• Random

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

A sample should be

• representative of  only middle school students only
• a very large group
• representative of the population
• representative of people who volunteer

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Russell randomly surveys seventh-graders in his school and finds that 6 of 30 attend summer camp. If there are 200 seventh-graders in his school, about how many are expected to attend summer camp?

• 40

• 1,000

• 176

• There is not enough information to answer.

Tags

CCSS.7.SP.A.2

The entire group studied is called the

• sample

• population

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

The part of the population being studied is called the

• sample

• population

• random

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1