You do a survey of business students and liberal arts school students to find out how many times a week they read a daily newspaper. In each case, you interview 100 students. You find the following:
(m= 4.5 times per week
Sm = 1.5
(la = 5.6 times per week
Sla = - 2.0

Test the hypothesis that there is no significant difference between these two samples.