(Answered) To estimate the percentage of households in connecticut

Statistics

To estimate the percentage of households in Connecticut which use fuel oil as a heating source, a researcher collects information from 1000 Connecticut households about what fuel is their heating source. State the individual, variable, population, sample, parameter, and statistic.

I need help with the wording of my answers. I am mainly concerned about my variable answer.

I wrote:

Individual: country
Variable: density of people per square kilometer
Population: set of all countries
Sample: set of 56 countries
Parameter: mean density of people per square kilometer calculated from the population
Statistic: mean density of people per square kilometer calculated from the sample

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