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Pollsters regularly conduct opinion polls to determine the popularity rating of the current president. Suppose a poll is to be conducted tomorrow in which 7,500 individuals will be asked whether the president is doing a good or bad job. The 7,500 individuals will be selected by​ random-digit telephone dialing and asked the question over the phone. Complete parts a through f.
a. What is the relevant population?
b. What is the variable of interest? Is it quantitative or qualitative?
c. What is the sample?
d. What is the inference of interest to the pollster?
e. What method of data collection is employed?
f. How likely is the sample to be representative?

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Answer:

a. The relevant population is all the citizens of the country

b. The variable of interest is about whether the president is doing a good job or bad job. It is qualitative

c. The sample data is the 7,500 citizens randomly selected by random-digit telephone dialing

d. The inference of interest to the pollster is whether the citizens think the president is doing good or bad

e. The method of data collection is survey.

Step-by-step explanation:

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