For the last 20 years, each semester 95 students take a Calculus class. You are interested in the average grade of students in this class. More precisely, you want to develop a confidence interval for the average grade. However, you only have access to a random sample of 72 student grades from the last semester.

For this sample of 72 student grades, you calculated an average of 84 points. The variance s^2 for the 72 student grades was 250. In addition, the distribution of the 72 grades is not highly skewed.

What is the point estimate for your mean grade (in points) in this case?