A university is comparing the grade point average of biology majors with the grade point averages of engineering majors. 25 students from each major...

A university is comparing the grade point average of biology majors with the grade point averages of engineering majors. 25 students from each major are randomly selected. The mean and standard deviation for each sample are shown in the table. The university wants to test if a significant difference in the GPAs for students in the two majors. How is the appropriate test statistic calculated?