SOLUTION: Please help Sample with size n = 100 has mean = 30. Assuming the population standard deviation is 8, construct 95% confidence interval for population mean. Use formula , zα

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Question 716114: Please help
Sample with size n = 100 has mean = 30. Assuming the population standard deviation is 8, construct 95% confidence interval for population mean. Use formula , zα/2 = 1.96




Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Sample with size n = 100 has mean = 30. Assuming the population standard deviation is 8, construct 95% confidence interval for population mean. Use formula , zα/2 = 1.96
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x-bar = 30
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E = z*s/sqrt(n) = 1.96*(8/sqrt(100)) = 1.568
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95% CI: 30-1.568 < u < 30+1.568
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Cheers,
Stan H.
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