To perform independent sample t test.
A sample of scores on an examination given to both males and females in MAT 560 is:
Males

72, 69, 98, 66, 85, 76, 79, 80, and 77

Females

81, 67, 90, 78, 81, 80, and 76

At the .01 level of significance, is the mean grade of the female students higher than that of males?