FAST Practice Quiz: Sampling & Inference

Directions: Read each question carefully. For multiple choice questions, fill in the circle next to your answer. For questions that say "Select ALL that apply," you may need to choose more than one answer.

Question 1

A school wants to know students' favorite lunch option. Which sampling method would produce the MOST representative sample?

A Survey students in the cafeteria during lunch B Survey students in the chess club C Randomly select 50 students from the school enrollment list D Ask teachers to recommend students to survey

Question 2

In a random sample of 80 customers, 52 said they were satisfied with their purchase. If the store has 2,000 customers, about how many would be expected to be satisfied?

A 520 B 1,040 C 1,300 D 1,560

Question 3

A researcher surveys 100 people at a gym about their exercise habits. She concludes that "85% of Americans exercise regularly." What is the problem with this conclusion?

A The sample size is too small B The sample is biased - gym members are more likely to exercise C The percentage should be rounded D She should have surveyed more gyms

Question 4

Select ALL that apply.

Which of the following are examples of RANDOM sampling methods?

Assigning numbers to all students and using a random number generator to select participants

Surveying people who volunteer to participate

Selecting every 5th person who enters a building

Drawing names from a hat containing all employees' names

Asking your friends their opinions

Question 5

A random sample of 150 voters shows: 75 support Candidate A, 60 support Candidate B, and 15 are undecided. If 30,000 people will vote, predict how many will support Candidate A.

A 7,500 B 12,000 C 15,000 D 18,000

Question 6

Two random samples are taken from the same population about pet ownership. Sample A (n=40) shows 55% own pets. Sample B (n=200) shows 48% own pets. Which statement is TRUE?

A Sample A is more reliable because the percentage is higher B Sample B is likely more reliable because it is larger C Both samples are equally reliable D Neither sample is reliable because the results are different

Score

Questions 1-3, 5-6: 1 point each | Question 4: 1 point for all correct

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FAST Practice Quiz: Sampling & Inference

Score

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