The director of a Masters of Public Administration Program ispreparing a brochure to promote the
program. She would like to include in the brochure the averagegrade point average (GPA) of first-
year students in the program, but since time is pressing shedecides to estimate this figure with a
sample of ten students (GPAs are normally distributed). The GPAsare listed below. What is the best
estimate of the average GPA for all first-year students? With95% confidence, can the director
conclude the average GPAs for first-year students is a B orbetter (3.0 on a 4.0 scale)?
2.8
3.6
3.4
2.5
2.2
2.6
4.0
3.1
2.7
3.5
