College credits. A college counselor is interested in estimating how many credits a student typically enrolls in each semester. The counselor decides to randomly sample 100 students by using the registrar's database of students. The histogram below shows the distribution of the number of credits taken by these students. Sample statistics for this distribution are also provided. 25 20 8 15 10- Min Q1 Median Mean SD Q3 Max 13 14 13.65 1.91 15 18 5 5 0 00 10 12 14 16 18 Number of credits (a) What is the point estimate for the average number of credits taken per semester by students at this college