<PRE><B>Question 393770</B>
Suppose a random sample of 50 values is taken from a normal population with standard deviation 34.7 g. If the sample mean is 167.4 g, construct a 95% confidence interval on the population mean.
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Using a TI-84 I get (157.78,177.02)
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Suppose a random sample of 5 values is taken from a normal population with standard deviation 34.7 g. If the sample mean is 167.4 g, construct a 95% confidence interval on the population mean
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Using a TI-84 I get (136.98,197.82)
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how and why the confidence intervals in problems 4 and 6 are different
The margin of error is different because the standard error of the sample
means is different since 34.7/sqrt(50) is smaller than 34.7/sqrt(5).
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Cheers,
Stan H.
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