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Mathematics, 06.12.2021 22:50 dorianhenderson987
The Nielsen Company conducts survey each year about the use of various media, such as television. A representative sample of adult Americans was surveyed in 2010, and the mean number of minutes per week spent watching television was 576 minutes and sample standard deviation was 60 minutes. An independently selected representative sample of adults was surveyed in 2011, the mean was 646 minutes and sample standard deviation was 80 minutes. Suppose that sample size in each year was 1000. Estimate the difference in the mean spent watching television in 2010 and the mean time spent in 2011 using a 99% confidence interval. Interpret the interval in context.
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