A professor is interested in following whether the "good" students finish the test earlier or later than the others in the class. He observes a particular test and gets the following data. If 'good' students are those who get 90 and above, can the professor conclude that good students finish the test randomly (use a 5% level of significance) ?
Order of
finishing test Marks Scored
1 - 10 94 70 85 89 92 98 63 88 74 85
11 - 20 69 90 57 86 79 72 80 93 66 74
21 - 30 50 55 47 59 68 63 89 51 90 88