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: What is the critical value of F at the 0.05 level of significance?
A) 5.85
B) 5.35
C) 3.18
D) 4.03

Question

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:  What is the critical value of F at the 0.05 level of significance?
A) 5.85 
B) 5.35 
C) 3.18 
D) 4.03

Quizplus · Accepted Answer

To find the critical value of F at the 0.05 level of significance, we need to use an F-distribution table with the degrees of freedom for the numerator (df1) and denominator (df2) equal to 9 (since there were 10 exams graded and we are comparing two grading procedures). Looking up 0.05 in the table with df1 = 9 and df2 = 9 yields a critical value of 3.18.

Two Accounting Professors Decided to Compare the Variance of Their