A laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 234 milligrams with s= 17.6 milligrams. Construct a 95% confidence interval for the true mean cholesterol content of all such eggs.

A laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 234 milligrams with s= 17.6 milligrams. Construct a 95% confidence interval for the true mean cholesterol content of all such eggs.