To identify: The population and sample.
Answer to Problem 1.1.1RE
Population: The entire collection of responses for all U.S. adults.
Sample: Collection of responses from 1,503 adults.
Explanation of Solution
Given info:
A study was conducted for 1,503 U. S. adults and found that 78% favor government policies requiring better fuel efficiency for vehicles.
Justification:
Population:
A collection of all outcomes, people or measurements of interest are termed as population.
The survey is conducted to study whether adults will favor the government policies requiring better fuel efficiency for vehicles. Thus, the population consists of all responses obtained from U.S. adults because it is considered to be the collection of all outcomes of interest.
Sample:
The information about the population is obtained from the sample. That is, a sample is considered to be a subset of the given population.
The survey is conducted for1,503 adults who responded to the survey. This is considered to be a sample because only sub portion from the entire adults were surveyed. Thus, the sample is 1,503 adults.
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