A Service Center for Electronic Equipment Is Conducting a Study

Multiple Choice

A service center for electronic equipment is conducting a study on three of their technicians: Joe,John,and James.All three specialize in repairing computer drives.The study was performed to study the service time of fixing the computer drives.The manager of the service center wishes to assess if the average service times for the three technicians are equal: H₀: ₁ = ₂ = ₃.Each technician was given a random sample of computer drives,and the service time for each was recorded.The ANOVA table and descriptive statistics are given below. What is the value of an estimate of the common standard deviation?

A) 3.51
B) 8.45
C) 8.61
D) 12.29