In 2014, researchers surveyed 776 randomly selected Caucasians, asking whether they believed that police could protect them

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In 2014, researchers surveyed 776 randomly selected Caucasians, asking whether they believed that police could protect them from violent crime. The percentage of those surveyed who said yes was 60%. The researchers then made an inference about all Caucasians.
a. Define a variable for the study.
b. Identify the sample.
c. Identify the population.
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