Answer:
The population is the entire adult population of the United States.
The sample is the group of 2276 adults in the US surveyed.
The value of 35% a statistic.
Explanation:
A parameter is a characteristic of a population. It is a numerical value of the population characteristic. It is based on all the population values.
A statistic is a characteristic of a sample. It is a numerical value of the sample characteristic. It is based on all the sample values drawn from the population.
A sample statistic is an unbiased estimator of the population parameter.
The sample statistic is also known as the point estimate of the parameter value.
In this case it is provided that of the 2276 adults in the US surveyed, 35% never travel using commercial airlines.
The population is the entire adult population of the United States.
The sample is the group of 2276 adults in the US surveyed.
The population parameter will be the population proportion of adults in the US who never travel using commercial airlines.
The statistic will be the 35% of the 2276 adults in the US surveyed, who never travel using commercial airlines.