Population Inferences Percents

• 15,760

• 17,560

• 16,760

• 16,660

• 100

• 150

• 200

• 250

Mr. Cardarella wants to know section 702's favorite food. He picks 10 students in 702 to ask.

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

A jar contains 1,800 marbles. James enters a contest to guess the number of any one color of marbles in the jar. He is allowed to take 4 random samples of 200 marbles each. Approximately how many red marbles can he expect are in the jar?

• 500

• 525

• 550

• 600

A travel club has 3,000 members. A random sample of 50 of the club members found that 12 people like mountain vacations best. Which statement is NOT supported by the sample data?

• Twenty-four percent of those sampled say they like mountain vacations best.

• An estimated 720 club members would likely say they enjoy mountain vacations best.

• Almost one-quarter of club members would likely say they enjoy mountain vacations best.

• More than 2,500 club members would likely say they prefer other vacations over mountain vacations.

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

150 people were polled on their favorite sport.  Based on the table, if you asked only 25 people what their favorite sport is, how many would say soccer is their favorite sport?

• 5 people

• 6 people

• 8 people

• 10 people

• 2

• 4

• 8

• 16

• 14 7th graders

• 28 7th graders

• 35 7th graders

• 42 7th graders