Chapter 12, Problem 5E

(a)

To determine

To identify the population of interest for this survey.

Answer to Problem 5E

The population of interest for this survey is all adults in the United States aged $18$ and older.

Explanation of Solution

It is given in the question that at its website Gallup poll publishes result of the new survey each day and as we scroll down the page we will find the statement stating the results of the survey conducted. Thus, by looking at the survey conducted we can say that the population of interest for this survey is all adults in the United States aged $18$ and older.

(b)

To determine

To explain what is the sampling frame.

Answer to Problem 5E

The sampling frame is U.S. adults with telephones.

Explanation of Solution

It is given in the question that at its website Gallup poll publishes result of the new survey each day and as we scroll down the page we will find the statement stating the results of the survey conducted. Thus, by looking at the survey conducted by the Gallup poll we can say that the sampling frame is U.S. adults with telephones.

(c)

To determine

To find out what problems would you be concerned about in matching the sampling frame with the population.

Explanation of Solution

It is given in the question that at its website Gallup poll publishes result of the new survey each day and as we scroll down the page we will find the statement stating the results of the survey conducted. Thus, by looking at the survey conducted by the Gallup poll we can say that the problems we would be concerned about in matching the sampling frame with the population is some members of the population, example many college students don’t have landline phones, which could create a bias.