Question

researchers wanted to determine if patrons of fast food restaurants were concerned about obesity. they waited outside a fast food restaurant they had randomly selected from a list of such establishments. they stopped every 20th person who came out of the restaurant and asked whether he or she thought obesity was a serious problem. what is the population and sample? the sample is the population is 1. every person leaving the restaurant 2. all people except those who work at fast food restaurants 3. people 4. every 20th person leaving the restaurant 5. all people that go to fast food restaurants 6. the researchers 7. the proportion that thought obesity was a serious problem 8. the fast food restaurants

Explanation:

To determine the population and sample:

• Population: The group the researchers want to study. Here, they want to know about patrons of fast food restaurants' concern about obesity. So the population is all people that go to fast food restaurants (option 5).
• Sample: The subset of the population they actually study. They stopped every 20th person leaving the selected restaurant, so the sample is every 20th person leaving the restaurant (option 4).

Answer:

The sample is 4. every 20th person leaving the restaurant
The population is 5. all people that go to fast food restaurants