SOLUTION: The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 18 people reveals the mean yearly consumption to be 60 pounds with a stand

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Question 824577: The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 18 people reveals the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds. Develop the 90 percent confidence interval for population mean.
Answer by stanbon(75887) About Me  (Show Source):
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The American Sugar Producers Association wants to estimate the mean yearly sugar consumption. A sample of 18 people reveals the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds. Develop the 90 percent confidence interval for population mean.
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Sample Mean = 60 lbs
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Margin of Error = 1.645 = 7.75
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90% CI: 60-7.75 < u < 60+7.75
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Cheers,
Stan H.