1. In June 2015 Gallup surveyed a random sample of 1527 adults in the US on their political
affiliation and views about the death penalty. The survey reported that, among
Republicans, 77% favor the death penalty, and 32% feel that blacks are more likely to
receive the death penalty than whites when convicted of similar crimes. The survey
reported that, among Democrats, 52% favor the death penalty, and 52% feel that blacks
are more likely to receive the death penalty than whites when convicted of similar crimes.
(10 points)
(a) What is the population of interest in this survey?
(b) Is this an observational study or experiment? Explain.
(c) What variables did this survey measure?
