Find the Confidence Interval Specified $\sigma = 11.7$ Milligrams $95 \%$ Confidence Interval for the True Mean Cholesterol Content

question 42

Multiple Choice

Find the confidence interval specified.
-A laboratory tested 85 chicken eggs and found that the mean amount of cholesterol was 190 milligrams. Assume that $\sigma = 11.7$ milligrams. Construct a $95 \%$ confidence interval for the true mean cholesterol content, $\mu$ , of all such eggs.

• A)\(186.7\) to \(193.3\) milligrams
• B) \(187.0\) to \(193.0\) milligrams
• C) \(187.5\) to \(192.5\) milligrams
• D) \(187.9\) to \(192.1\) milligrams

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