The Internal Revenue Service Wishes to Study the Time Required

Multiple Choice

The Internal Revenue Service wishes to study the time required to process tax returns in three regional centers.A random sample of three tax returns is chosen from each of three centers.The time (in days) required to process each return is recorded as shown below.Subsequently,an ANOVA test was performed. Degrees of freedom for the error sum of squares in the ANOVA would be

A) 11
B) 2
C) 4
D) 6