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According to the Bureau of the Census, the population of Themelitown, NY is 808 persons. For purposes of her company's records, assume that a researcher
According to the Bureau of the Census, the population of Themelitown, NY is 808 persons. For purposes of her company's records, assume that a researcher has interviewed a sample of 400 persons and found that their average number of years of formal education is 11.5 with a standard deviation of 4.3 years. Set up a 90 percent confidence interval estimate of the population average
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