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 Professor 1 79.3 22.4 Professor 2 82.1 12.0 At the 1% level of significance, what is the decision? Seleccione una: O A. Fail to reject the null hypothesis and conclude the variances are the same. O B. Reject the null hypothesis and conclude the variances are different. O C. Reject the null hypothesis and conclude the variances are the same. O D. Fail to reject the null hypothesis and conclude the variances are different.

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