In an August 2012 Gallup survey of 1,012 randomly selected U.S. adults (age 18 and over), 53% said that they were dissatisfied with the quality of education students receive in kindergarten through grade 12. They also report that the "margin of sampling error is plus or minus 4%."
17. What is the population of interest?
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18. What is the sample being used? _____________________________________________
19. What is the population parameter of interest, and what is the correct notation for this parameter? What is the relevant statistic?
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20. Find an interval estimate for the parameter of interest. Interpret it in terms of dissatisfaction in the quality of education students receive. Use two decimal places in your answer.