A laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 240 milligrams with s = 19
A laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 240 milligrams with s = 19.8 milligrams. Construct a 95%confidence interval for the true mean cholesterol content of all such eggs.
Solution: The 95% confidence interval for the true mean cholesterol content is given by
where
,
and
. Therefore, the confidence interval is written as
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