1.42 McMullin and Owen (J. Professional Issues in Eng. Edu. and Practice, 2002) reported assessment of one engineering course taught using distance learning technology at San Jose State University and San Francisco State University.

The mean grade achieved by 27 students at the home site was 2.9. The mean grade achieved by 16 students at the distant site was 2.6.

Determine the mean grade of students enrolled in this program.