Looking for someone to verify my homework answers on identifying the sample and population......
1) A group of 50,000 randomly selected adults were survey about whether they drink at least 6 - 8 oz glasses of water each day. Only 35% said yes to the question.
Q: What is the sample?
A: 50,000 random adults
Q: What is the population?
A: All adults
2) An employee at the local ice cream emporium asks 3 customers if they liked cookie dough ice cream.
Q: What is the sample?
A: 3 customers at the local ice cream emporium
Q: What is the population?
A: All local ice cream emporium customers
You are correct. In 2, you are only drawing from the population of the LOCAL emporium's customers.
Determine which of the four levels of measurement (nominal, ordinal, interval, or ratio) is most appropriate for each of the situations below. (2 points each part)
4a. The temperature of 10 light bulbs left burning for 5 hours
4b. The sample of pillows on the shelf categorized as soft, medium and firm
4c. Salaries of high school teachers
4d. Nationalities of concert spectators
To verify the answers for identifying the sample and population in these two scenarios, here's how you can approach it:
1) In the first scenario:
- The sample is the group of 50,000 randomly selected adults who were surveyed.
- To identify the population, ask yourself who the survey results are intended to represent. In this case, it is all adults, as the goal is to generalize the findings to the entire adult population.
So, the answers you provided for the sample (50,000 random adults) and the population (all adults) are correct.
2) In the second scenario:
- The sample is the 3 customers that the employee at the local ice cream emporium asked about their opinion on cookie dough ice cream. The sample represents a subset of the population.
- The population, in this case, would be all customers of the local ice cream emporium, as the goal is to gather insights on customer preferences by surveying a few individuals.
Therefore, the answers you provided for the sample (3 customers at the local ice cream emporium) and the population (all local ice cream emporium customers) are also correct.
When identifying the sample and population, it's important to consider who the data or survey results are intended to represent, based on the specific context and objective of the study.