You calculate a 90% confidence interval of the difference between the mean GPA of males at BYU-Idaho and the mean GPA of females at BYU-Idaho, Mmale - M female, and get (-0.21, 0.23). What possible conclusion can you make based on this confidence interval? There is something wrong with our computations because the GPA cannot be negative. The mean GPA of males is 2.1 and that of females is 2.3. The mean GPA of males is higher than that of females. There is no difference between the mean GPA of males and females. The mean GPA of females is higher than that of males