Two accounting professors decided to compare the variance of their grading procedures. To accomplish this, they each graded the same 10 exams, with the following results: Mean Grade Standard Deviation 22.4 Professor 179.3 Professor 282.1 12.0 At the 2% level of significance, what is the decision? Fail to reject the null hypothesis and conclude the variances are the same. Reject the null hypothesis and conclude the variances are different. Reject the null hypothesis and conclude the variances are the same. Fail to reject the null hypothesis and conclude the variances are different. 000