SOLUTION: A 90% confidence interval for a population mean is determined to be 800 to 900. If the confidence is increased to 95% confidence while the sample statistics and sample size remain

Question 437142: A 90% confidence interval for a population mean is determined to be 800 to 900. If the confidence is increased to 95% confidence while the sample statistics and sample size remain the same, the confidence interval for mui
A. becomes narrower
B. becomes .05
C. does not change
D. becomes wider
E. becomes .025
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A 90% confidence interval for a population mean is determined to be 800 to 900. If the confidence is increased to 95% confidence while the sample statistics and sample size remain the same, the confidence interval for mui
------------------------
If confidence is increased from 90 to 95, z increases,
so ME increases, so the CI becomes wider.
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Cheers,
Stan H.
A. becomes narrower
B. becomes .05
C. does not change
D. becomes wider
E. becomes .025

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