Predictions of a Random Sample

In a sample of people in the school district, 16 out of 25 favored building a new football stadium. If 6,000 people vote in the next local election, how many are likely to vote in favor of the new football stadium based on this sample?

• 2,980

• 3,840

• 2,160

Tags

CCSS.7.RP.A.3

A student chooses a random sample of 50 out 400 students. He finds that 7 students have traveled outside the United States. Predict the number of students who have traveled outside the United States.

• 48 students

• 56 students

• 60 students

• 64 students

The mall sent a survey to 560 people. They found that 46 out of 108 people said they would shop at the mall if it opened this weekend. Predict the number of people who would shop at the mall.

• 189 people

• 204 people

• 230 people

• 239 people

Tags

CCSS.6.RP.A.3B

A group of people were asked about their favorite types of pants. Predict how many people out of 300 would say capris are their favorite.

• 300

• 90

• 15

• 50

Four candidates are running for school president. A random sample of students at the school are surveyed about which of the candidates they are likely to choose. The chart above shows the number of students from the random sample who chose each candidate. A total of 800 students are expected to vote in the election for school president. Based on the information shown in the chart, which election outcome is most likely?

• Rasheed will win with 192 votes.

• Rasheed will win with 189 more votes than he had in the survey

• Janelle will win with 8 more votes than the second-place finisher, Rasheed.

• Janelle will win with 128 more votes than the second-place finisher, Rasheed

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.

Four candidates are running for school president. A random sample of students at the school are surveyed about which of the candidates they are likely to choose. The chart above shows the number of students from the random sample who chose each candidate. A total of 800 students are expected to vote in the election for school president. Based on the information shown in the chart, which election outcome is most likely?

• Rasheed will win with 192 votes.

• Rasheed will win with 189 more votes than he had in the survey

• Janelle will win with 8 more votes than the second-place finisher, Rasheed.

• Janelle will win with 128 more votes than the second-place finisher, Rasheed

According to a random telephone survey, 85% of all working adults in the U.S. are satisfied with their current job. If I asked 500 adults, how many do you predict would be satisfied with their current job?

• 85 adults

• 340 adults

• 500 adults

• 425 adults

Our high school students council surveyed 80 out of 450 students and asked how they feel about starting school later. 56 students said they would like to start school later. Predict the number of students that would like to start school later.

• 255 students

• 285 students

• 300 students

• 315 students

A principal randomly chooses 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?

• 27

• 9

• 18

• 80