SOLUTION: Use the given degree of confidence and sample data to construct a confidence interval for the population mean u. Assume that the population has a normal distribution n=12, x=21.3,

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Question 597923: Use the given degree of confidence and sample data to construct a confidence interval for the population mean u. Assume that the population has a normal distribution n=12, x=21.3, s=6.3, 99%
Answer by stanbon(75887) About Me  (Show Source):
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Use the given degree of confidence and sample data to construct a confidence interval for the population mean u. Assume that the population has a normal distribution n=12, x=21.3, s=6.3, 99%
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Sample mean = x-bar = 21.3
ME = z*s/sqrt(n) = 2.5758*6.3/sqrt(12) = 4.6845
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99% CI: 21.3-4.68 < u < 21.3+4.68
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(16.62,25.98)
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Cheers,
Stan H.