Opinion polls. Pollsters regularly conduct opinion polls to determine the popularity rating of the current president. Suppose

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Opinion polls. Pollsters regularly conduct opinion polls to determine the popularity rating of the current president. Suppose a poll is to be conducted tomorrow in which 2,000 individuals will be asked whether the president is doing a good or bad job. The 2,000 individuals will be selected by random-digit telephone dialing and asked the question over the phone.

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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