At a local college, 65 female students were randomly selected and it was found that their mean monthly income was $628 with a standard deviation of $121.50. Seventy-five male students were also randomly selected and their mean monthly income was found to be $670 with a standard deviation of $168.70. Test the claim that male students have a higher monthly income than female students. Use α = 0.01. Group of answer choices
a. reject H0
b. fail to reject H0
c. not sufficient information to decide