2. A coordinator of an engineering program was interested in testing the effectiveness of onsite and online courses. Twenty-three students were selected to participate in this research project. Ten of them were assigned to attend the onsite class and the remaining 13 were assigned to attend the online class. At the end of a seven-week session, all the students were given the same test. The data below give the scores of all the students who participated in this project. Based on these data, can we conclude at the 5% level of significance that the two methods of teaching are equally effective using the Mann-Whitney test?

Onsite: 96 84 85 100 86 80 83 93 100 83 Online: 88 83 81 76 85 94 79 95 79 85 9v0 90 96