Lessons 6.1 & 6.2 Quiz

A theme park has many attractions, one of which is the roller coaster. Are the people who ride the roller coaster the population, or a sample, of the theme park? Explain.

• Population; they are all the people at the theme park.

• Sample; they are a subset of all the people at the theme park.

• Both population and sample. They are all the people at the theme park.

• Neither population nor sample. They are not the people at the theme park.

Lana and Jeff each randomly surveyed 15 students about their favorite types of movies. Are these samples representative of the school population? Explain.

• No, the samples are not large enough to be representative.

• Yes, both samples are random, so they are representative.

• No, the samples might include some of the same people, so they are not representative.

• Yes, the samples do not include the same people, so they are representative.

Students in Mr. Brown's math class wanted to know the favorite snacks of students in the school. How could they generate a random sample to survey?

• Line up the students by height and choose the first 20 students.

• Use the school roster and randomly choose 50 boys.

• Obtain an alphabetized list of all the students in the school and select every seventh student.

• Place all the names of the students in Mr. Brown's math class in a hat and randomly select 10 students.

The food service manager conducted a random survey of students to determine their preference for new lunch menu items. Select the three inferences that can be drawn from the manager's data.

• About twice as many students prefer salad bar as compared to pita sandwiches.

• Burritos are the most preferred item.

• About three-fourths of students prefer either salad bar or burritos.

• Twice as many students prefer pizza as compared to pita sandwiches.

• About half as many students prefer pita sandwiches as compared to burritos.

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?