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Sample and Population 1. State legislators are interested in estimating the percentage of Kentucky adults who have a college degree (associate's degree or higher). To
Sample and Population 1. State legislators are interested in estimating the percentage of Kentucky adults who have a college degree (associate's degree or higher). To investigate, a simple random sample of 200 residents is selected using voter registration records. Each person is contacted and asked whether or not they have a college degree (associate's or higher). After completing the survey, it was found that 43 individuals had obtained an associate's degree or higher. How was the sample of Kentucky residents selected? What sampling frame was used? How could this sampling frame introduce bias into the sample? Identify the population, parameter, sample, and statistic for this example. 2. Researchers are interested in determining the percentage of U.S. adults that believe drinking and driving is a serious issue. To address this question, a research team waited outside a bar and asked 75 patrons leaving the bar whether he or she thought drinking and driving was a serious problem. 42% of the patrons responded that it was a serious problem. a. Describe the population. b. Describe the sampling frame. c. Describe the sample. d. What is the population parameter of interest? e. Is the 42% a sample statistic or a population parameter? Explain. f. Describe any bias that might be present in the experiment
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