The average hemoglobin reading for a sample of 20 teachers was 16 grams per 100 milliliters, with a sample standard deviation of 2 grams. Hemoglobin readings follow a normal distribution. Find the 99% confidence interval of the true mean.
A) What is the point estimate for the average hemoglobin reading for teachers?
B) What is the margin of error for a 99% confidence Interval?
C) Construct a 99% confidence interval for the average hemoglobin reading for teachers.