A Single Population Mean Using the Normal Distribution · Exercise 45
The American Community Survey (ACS), part of the U.S. Census Bureau, conducts a yearly census similar to the one taken every 10 years, but with a smaller percentage of participants. The most recent survey estimates with 90 percent confidence that the mean household income in the United States falls between $69,720 and $69,922. Find the point estimate for mean U.S. household income and the error bound for mean U.S. household income.
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OpenStax, Statistics · §8.1 A Single Population Mean Using the Normal Distribution · Exercise 45
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