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As an aid for improving students' study habits, nine students were randomly selected to attend a seminar on the importance of education in life. The table shows the number of hours each student studied per week before and after the seminar. At a = 0.10, did attending the seminar increase the number of hours the students studied per week? Student 1 2 3 4 5 6 7 8 9 Before 9 12 6 l 5 3 1 8 10 l 3 7 After 9 1 7 9 20 2 21 15 22 6 Assume that M1 and M2 are the number of hours each student studied per week before and after the seminar, respectively. And if applicable, MD = M1 - M2 Hypotheses: Ho : O MD = 0 OMD 0 OMD > 0 OMD M2 O MI 0 OMD M2 OMI Za OlZc /> Za OZc ta,(n-1) Otc ta, ( n- 1 ) Oltcl> to 2, 0 Otc > ta,u Otc