A laboratory tested twelve chicken eggs and found that the mean amount of cholesterol was 244 milligrams with s = 16.3 milligrams.

1. The degrees of freedom for theStudentizedversion of the sample mean is
2. The point estimate for the true mean of all such eggs ismilligrams
3. Thet-value for a 95% confidence interval ist=(Round to 3 decimal places)
4. The Margin of error for a 95% confidence interval for this sample is(Round to one