Survey Samples

A research team surveys 200 high schoolers at glenoak. They find that 57% of them drive to school every day. What is the margin of error?

• 95%

• 14%

• 7%

• 3%

Many years ago, a New York Times Poll on women’s issues interviewed 1025 women randomly selected from the United States, excluding Alaska and Hawaii. One question was “Many women have better jobs and more opportunities than they did 20 years ago. Do you think women had to give up too much in the process, or not?” 48% of women in the sample said “Yes.” What is the sample size for this survey?

• 1025

• American Adult Women

• American Adults

• 48%

A research team surveys 1001 adults, asking them how many hours they work per week. What is the margin of error for this survey?

• 3%

• 32%

• 63%

• 9%

A recent survey found that out of 400 random American adults, 89% pay their bills on time. The margin of error in this survey was 2%. What is the interval of values in which the truth is likely found?

• 89% - 91%

• 87% - 89%

• 87% - 91%

• 388 - 402

The sample represents the population.

Choose the answer that says "Representative Sample"

• Random Sample

• Biased Sample

• Representative Sample

A school principal wants to see which subject the 700 students in his school liked best. Which choice BEST represents a representative sample?

• All girls in the school

• All students who have an A in Social Studies

• All students who are failing Math

• 5 students from each class from each grade level

The sample represents the population.

Choose the answer that says "Representative Sample"

• Random Sample

• Biased Sample

• Representative Sample

Identify the population and sample for each example.

• Population: Students

  Sample: Members of the football team

• Population: Members of the football team

  Sample: Students

• Population: Students

  Sample: Students that have had a broken bone

• Population: Members of the football team

  Sample: Members of the football team that have broken a bone.

A school principal wants to see which subject the 695 students in his school liked best. Which choice BEST represents a representative sample?

• The girls in the school.

• 1 classroom for each grade

• All the students in the school.

• The students making a B in math.

A sample should be

• representative of  only middle school students only

• a very large group

• representative of the population

• representative of people who volunteer