Question

brand y cola sponsors a survey of 15,559 residents of texas to determine which brand of cola they prefer. forty percent say they prefer brand x, and 60 percent say they prefer brand y. which of the following is the sample used for the survey?

the residents of texas
the 15,559 residents
the 40 percent who prefer brand x cola
the 60 percent who prefer brand y cola

Explanation:

Define population and sample

Using the Sample vs Population knowledge point

In statistics, the population is the entire group of individuals that we want information about, while the sample is the specific subset of the population from which data is actually collected.

Identify the sample in the survey

Using the Sample vs Population knowledge point

• Population: All residents of Texas (the entire group of interest).
• Sample: The 15,559 residents of Texas who were actually surveyed.
• Subgroups: The 40% and 60% represent statistics (proportions) calculated from the sample, not the sample itself.

Therefore, the sample is the 15,559 residents.

Answer:

• the residents of Texas
• the 15,559 residents (Correct answer)
• the 40 percent who prefer Brand X Cola
• the 60 percent who prefer Brand Y Cola