An economist is interested in studying the incomes of consumers in a country. The population standard deviation is known

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answerhappygod
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An economist is interested in studying the incomes of consumers in a country. The population standard deviation is known

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An economist is interested in studying the incomes of consumers
in a country. The population standard deviation is known to be $1,
000. A random sample of 50 individuals resulted in a mean income of
$15, 000. Construct a 99% confidence interval for the average
income.
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