Inferences from Samples about Populations

Quiz
•
Mathematics
•
7th Grade
•
Hard
Anthony Clark
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
There are 400 students at Polly's school. She surveyed a random sample of 80 students to find their favorite hobby. 19 said they like to read. 30 said they like to be with friends. 8 said they like to do crafts. 23 said they like to play sports. Polly infers that doing crafts is the least popular hobby at her school. Refer to the data table. Polly surveys two more samples. Do the results from these samples support the inference made from the first sample?
Yes, the survey results support the inference that doing crafts is the least popular hobby at Polly's school.
No, the survey results does not support the inference that doing crafts is the least popular hobby at Polly's school.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?
Thirty randomly selected students from her school
Thirty students who are rarely tardy
thirty of her friends
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The Magic Kingdom theme park has many attractions, one of which is Space Mountain. Are the people who ride Space Mountain 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.
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Lucy collects data from a random sample of seventh-graders. Out of 40 respondents, 7 attend after-school programs. Of the 200 seventh-graders attending Lucy’s school, how many would be expected to attend afterschool programs?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What inference can you draw from this survey?
I can infer that most students in this school like pizza.
I can infer that very few students like hamburgers.
I can infer that their favorite is corn dogs.
I can infer that most students in this school like hamburgers.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The table shows the results of a survey of 200 people attending a hockey game.
The attendance for the hockey game is about 25,000 visitors each game. Based on the table, how many people out of 25,000 could be expected to buy a pennant?
1,375
1,650
2,750
3,850
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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.
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